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Subject: Biotech and Medical Sciences

  • What is Dark Oxygen?

    Why in the News?

    Deep-sea researchers have initiated a groundbreaking project to explore dark oxygen, a form of oxygen produced in complete darkness on the ocean floor.

    What is Dark Oxygen?

    • Dark oxygen refers to oxygen produced at extreme ocean depths without the involvement of photosynthesis.
    • This process occurs in total darkness on the ocean floor, challenging the traditional understanding that sunlight is necessary for oxygen generation.
    • It was first discovered in 2024 by researchers studying deep-sea environments.
    • The strange nodules found at a depth of 13,000 feet act like natural batteries, splitting water molecules into oxygen and hydrogen using electrical charges.
    • These nodules function in areas where light does not penetrate, under extreme pressure and low-temperature conditions.
    • Occurrence:
      • Found in specific deep-sea zones, particularly in regions characterized by unique electrochemical activity.
      • Occurs in places previously considered incapable of supporting oxygen production.

    Features and Significance of Dark Oxygen:

    • Unlike traditional oxygen production, dark oxygen does not rely on photosynthesis or sunlight.
    • It is driven by electrochemical reactions occurring naturally in the ocean floor.
    • Strange nodules on the ocean floor possess an electric charge, enabling them to split water molecules into oxygen and hydrogen.
    • The process releases hydrogen, which could potentially serve as an energy source for microbial life in these regions.

    PYQ:

    [2012] Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

    (a) Hydrogen, Oxygen, Sodium

    (b) Carbon, Hydrogen, Nitrogen

    (c) Oxygen, Calcium, Phosphorus

    (d) Carbon, Hydrogen, Potassium

  • GenomeIndia project complete, PM Modi calls it historic

    Why in the News?

    India has created a database of 10,000 human genomes, covering 83 population groups, which is about 2% of the country’s 4,600 population groups.

    What are the key achievements of the Genome India Project?

    • Completion of Genome Sequencing: The project successfully sequenced 10,000 human genomes from 83 population groups, representing approximately 2% of India’s 4,600 population groups. This data is now housed at the Indian Biological Data Centre (IBDC) in Faridabad, Haryana.
    • Identification of Genetic Variants: Initial analyses revealed around 27 million genetic variants, with 7 million being low-frequency variants not found in other global databases. This highlights India’s unique genetic diversity and the potential for targeted research.
    • Global Accessibility: The genome data is accessible to researchers worldwide, fostering international collaboration in genomics research and precision medicine.

    What are the impact on Biotechnology and Healthcare?

    • Advancement of Precision Medicine: The database is expected to facilitate advancements in precision medicine by enabling researchers to study disease risks and drug responses specific to the Indian population. This could lead to more effective treatments tailored to genetic variations.
    • Potential for Drug Development: With a focus on understanding genetic predispositions to diseases, the project can support the development of new medications and therapeutic interventions, particularly for genetic and infectious diseases.
    • Strengthening India’s Biotech Economy: The initiative is seen as a cornerstone for bolstering India’s biotechnology sector, enhancing its capacity for genomic research and manufacturing.

    What are the challenges? 

    • Data Privacy and Security: India currently lacks a comprehensive Data Privacy Bill, which raises concerns about the protection of sensitive genetic information. 
      • The absence of robust legal frameworks increases the risk of misuse or unauthorized access to genetic data, potentially compromising individual privacy.
    • Ethical Concerns: The use of genomic data for purposes such as gene editing could lead to ethical dilemmas, including issues related to “designer babies” and unintended consequences of genetic modifications.  
    • Public Trust and Acceptance: Gaining public trust is crucial for the success of the project. There may be apprehensions among individuals regarding how their genetic data will be used, especially if it involves sharing with commercial entities or if there are fears about potential discrimination based on genetic information.
    • Integrity of Data Collection: Ensuring the integrity and accuracy of data collection, storage, and usage is essential. 
      • Without stringent protocols, there is a risk that the data may be misinterpreted or misused, leading to flawed conclusions about genetic predispositions and health risks.

    What steps can be taken to overcome the present challenges? (Way forward)

    • Expanding the Database: Experts suggest increasing the number of sequenced genomes to up to 1 million to better capture India’s vast genetic diversity. This expansion would provide deeper insights into genetic variations across different ethnic groups.
    • Funding and Collaboration: Securing additional funding and forming partnerships with leading research institutions can help overcome financial limitations and enhance data enrichment efforts.
    • Ethical Data Management: Ensuring robust data sharing protocols and privacy measures will be crucial for maintaining public trust and facilitating research access while protecting individual identities.

  • What is Selective Gene Silencing?

    Why in the News?

    Researchers at Columbia University found that cells can selectively switch off one parent’s copy of a gene. This may explain why some people with harmful mutations remain symptom-free, and it could lead to new diagnostic and therapeutic approaches for genetic disorders.

    Researchers at Columbia University found that cells can selectively switch off one parent's copy of a gene. This may explain why some people with harmful mutations remain symptom-free, and it could lead to new diagnostic and therapeutic approaches for genetic disorders.

    About the Selective Silencing Mechanism:

    • Selective gene silencing refers to the process where cells inactivate one parent’s copy of a gene (either maternal or paternal), resulting in an unequal contribution of the two gene copies to cellular function.
    • Previously thought to be rare, recent research reveals that this phenomenon is relatively common and plays a significant role in genetic variability, disease progression, and individual health outcomes.
    • Key Features:
      • Inactivation can vary between different cell types (e.g., immune cells and kidney cells).
      • The process is dynamic and may change over time, adding complexity to how genes function in the body.
      • Approximately 1 in 20 active genes in some immune cells exhibit this selective bias.
    • Implications for Health:
      • This mechanism helps explain why individuals carrying the same disease-causing mutation can have vastly different symptom severities.
      • It shifts the understanding of genetic diseases, emphasizing the importance of dynamic gene activity patterns alongside static genetic codes.
      • The discovery opens up opportunities for novel diagnostic and therapeutic approaches by focusing on gene expression rather than genetic sequences.

    What are its significant applications?

    • Selective Gene Manipulation: Therapies could be developed to activate healthy gene copies while suppressing diseased ones, offering a less invasive alternative to traditional genetic editing.
    • Improved Understanding of Diseases: Selective gene silencing explains variability in conditions like lupus and cancer, revealing why some individuals remain symptom-free.
    • Precision Medicine: By identifying individual patterns of gene expression, personalized treatment options become possible, reducing the need for one-size-fits-all approaches.
    • Early Interventions: Recognizing at-risk but asymptomatic individuals allows healthcare providers to implement preventive measures and potentially delay disease onset.
    • Protein-Based Therapies: Focusing on selective gene activity aids in detecting and differentiating disease-related proteins from healthy ones, paving the way for targeted, protein-specific drugs.

    PYQ:

    [2014] Consider the following techniques/phenomena:

    1. Budding and grafting in fruit plants
    2. Cytoplasmic male sterility
    3. Gene silencing

    Which of the above is/are used to create transgenic crops?

    (a) 1 only

    (b) 2 and 3

    (c) 1 and 3

    (d) None

  • Nanopore Technology

    Why in the News?

    Researchers at the University of California, have developed a nanopore-based diagnostic tool capable of detecting illnesses more quickly and accurately by analyzing signals from individual molecules.

    What is the Nanopore-Based Tool?

    • The Nanopore-Based Tool is a groundbreaking innovation developed by UC Riverside scientists for disease diagnostics.
    • It leverages nanopores, which are tiny openings capable of detecting individual molecules like DNA and proteins.
    • By measuring electrical signals generated as molecules pass through the nanopore, the tool enables ultra-sensitive and precise detection of illnesses.

    How does it Work?

    • Biological samples mixed with salts are introduced into the system.
    • Salts dissociate into ions, creating a flow through the nanopore.
    • As a DNA or protein molecule passes through the nanopore, it blocks the flow of ions.
    • This blockage reduces the flow, creating electrical signals.
    • The system measures the reduction in ion flow to identify the molecule.
    • Advanced circuitry accounts for missed signals, ensuring precise detection.
    • Nanopores filter out background noise, unlike traditional systems that require external filters, preserving critical data for accurate diagnostics.

    Significance and Features of Nanopore Technology

    • It helps detect infections within 24 to 48 hours, much faster than traditional methods.
    • It is crucial for fast-spreading diseases, enabling timely intervention.
    • It captures signals from single molecules, eliminating the need for large biological samples.
    • It could revolutionize home testing and clinic-based diagnostics.
    • It helps Identify subtle differences in proteins, aiding in personalized treatment plans.
    • It promotes deeper understanding of how proteins impact health and disease.
    • It paves the way for single-molecule protein sequencing, offering insights beyond DNA sequencing.

    PYQ:

    [2015] With reference to the use of nanotechnology in health sector, which of the following statements is/are correct?

    1. Targeted drug delivery is made possible by nanotechnology.

    2. Nanotechnology can largely contribute to gene therapy.

    Select the correct answer using the codes given below:

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

  • What is Human Metapneumo- Virus (HMPV)?

    Why in the News?

    Human Metapneumovirus (HMPV) has recently become a topic of widespread discussion in India, fueled by sensational media reports. These reports claim the emergence of a “new dangerous virus” from China, leading to unnecessary public panic and misinformation.

    What is Human Metapneumovirus (HMPV)?

    • Human Metapneumovirus (HMPV) is a respiratory virus that primarily causes mild to moderate respiratory infections.
    • It belongs to the Paramyxoviridae family, the same group of viruses that includes respiratory syncytial virus (RSV) and parainfluenza.
    • HMPV was first identified in 2001 and has been circulating globally for decades.
    • Most infections are mild and self-limiting, but HMPV can cause severe illness in vulnerable groups such as:
      • Elderly individuals.
      • Young children (especially under five years).
      • Immunocompromised individuals or those with chronic illnesses.
    • Transmission:
      • Spread primarily through respiratory droplets, direct contact with contaminated surfaces, or close contact with infected individuals.
    • Diagnosis:
      • Advanced PCR-based respiratory panels can detect HMPV. However, these tests are not routinely performed unless required in vulnerable patients or during hospital outbreaks.

    Symptoms and Treatment for HMPV:

    • HMPV symptoms overlap with those of other respiratory viruses like influenza and RSV.
    • Mild Symptoms: Runny nose; Sore throat; Cough; Fever; Fatigue.
    • Severe Symptoms (in vulnerable populations): Bronchitis; Wheezing; Pneumonia; Difficulty breathing; Hypoxia in extreme cases.
    • No Specific Antiviral or Vaccine: Unlike flu and RSV, there is no targeted antiviral therapy or vaccine for HMPV.
    • Supportive Care: Rest and hydration; Over-the-counter medications to manage fever and pain (e.g., acetaminophen or ibuprofen).
    • For Severe Cases: Hospitalization may be required for oxygen therapy, nebulization, or other supportive measures.

    Present Scenario- Global and National:

    • HMPV is one of the leading causes of respiratory infections worldwide, following influenza and RSV.
    • Studies indicate HMPV accounts for 5-10% of respiratory infections in children and vulnerable adults annually.
    • The Indian Council of Medical Research (ICMR) recently reported two HMPV cases in Karnataka involving babies with a history of bronchopneumonia.
    • These are the first cases identified using PCR diagnostic tools after a surge in HMPV cases in China.

    PYQ:

    [2022] In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements:

    1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform.

    2. Sputnik V vaccine is manufactured using a vector-based platform.

    3. COVAXIN is an inactivated pathogen-based vaccine.

    Which of the statements given above are correct?

    (a) 1 and 2 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • Mitochondrial Genome (mtDNA)

    Why in the News?

    Recent research indicates that age-related losses in our cell’s mitochondrial DNA (mtDNA)—specifically, deletion mutations—could be a major driver of aging. These mutations, once they accumulate, reduce the mitochondrion’s ability to produce energy (ATP), causing cell and tissue dysfunction.

    Mitochondrial Genome (mtDNA)

    What are Mitochondria?

    • Mitochondria generate most of the cell’s energy (hence called the Powerhouse) in the form of ATP (adenosine triphosphate).
    • They originated from free-living bacteria absorbed by ancient single-celled organisms, retaining a fraction of their own DNA (mtDNA).
    • Unlike nuclear DNA, mitochondria have their own circular DNA, though limited in size.
    • Humans inherit mitochondria exclusively from the mother’s egg; sperm-contributed mitochondria are generally not passed on.
    • They have a double membrane: a relatively permeable outer membrane and a highly folded inner membrane (cristae) that maximizes surface area for energy production.
      • Their inner compartment, the mitochondrial matrix, houses mitochondrial DNA (mtDNA), ribosomes, and enzymes for the Krebs cycle (citric acid cycle) and fatty acid β-oxidation.
    • Mitochondria help regulate intracellular calcium levels, which is crucial for various signalling pathways.
    • They play a role in apoptosis (programmed cell death) by releasing factors such as cytochrome c when the cell is under severe stress.

    Functions of DNA, mRNA, and the gene:

    • DNA (Deoxyribonucleic Acid):
      • Blueprint of Life: Houses genetic instructions in the form of a sequence of bases (A, T, G, C).
      • Chromosomal Structure: In the nucleus, it is organized into 23 pairs of chromosomes in humans, each carrying numerous genes.
      • Base-Pairing: Two DNA strands form a double helix via base-pair bonding (A-T, G-C).
    • Gene:
      • Functional Unit of DNA: A stretch of DNA containing instructions (a few thousand base-pairs) for making proteins or functional RNA.
      • Expression: When active, a gene is ‘read’ and transcribed into mRNA.
    • mRNA (Messenger RNA):
      • Intermediate Molecule: Carries the gene’s instructions from the DNA (in the nucleus) to the cytoplasm.
      • Protein Synthesis: Ribosomes read mRNA sequences, translating them into specific proteins.

    Functions of the Mitochondrial Genome (mtDNA):

    • Encodes Key Mitochondrial Proteins:
      • The mtDNA has 13 protein-coding genes crucial for mitochondrial energy production (ATP synthesis).
      • It also encodes 24 non-coding genes (like rRNAs and tRNAs), essential for mitochondrial protein synthesis.
    • Energy Production:
      • mtDNA-encoded proteins form part of the electron transport chain, where most ATP is produced.
    • Distinct Inheritance Pattern:
      • Inherited exclusively from the mother.
      • Each cell contains multiple mitochondria, each with multiple copies of mtDNA.
    • Implication in Aging and Disease:
      • Age-related mutations (deletions, chimeric genes) in mtDNA can lead to functional decline in tissues like muscle and brain.
      • Loss of intact mtDNA reduces ATP generation, contributing to cellular and tissue ageing.

    PYQ:

    [2021] In the context of hereditary diseases, consider the following statements:

    1. Passing on mitochondrial diseases from parent to child can be prevented by mitochondria replacement therapy either before or after in vitro fertilization of the egg.
    2. A child inherits mitochondrial diseases entirely from mother and not from father.

    Which of the statements given above is/are correct?

    (a) 1 only
    (b) 2 only
    (c) Both 1 and 2
    (d) Neither 1 nor 2

  • Mumps Vaccine

    Why in the News?

    Tamil Nadu Government has requested the Centre to consider including the Measles, Mumps, and Rubella (MMR) vaccine in the Universal Immunisation Programme (UIP) due to surge in the Mumps cases across the State.

    Tamil Nadu’s UIP currently offers 11 vaccines protecting against 12 vaccine-preventable diseases, including:

    • Tuberculosis, diphtheria, pertussis, hepatitis B, haemophilus influenzae, tetanus, poliomyelitis, measles, rubella, rota virus, pneumococcal, and Japanese encephalitis (in 14 endemic districts).
    • The Measles-Rubella (MR) vaccine was added to the UIP in April 2017, but mumps is yet to be included.

    About Mumps Disease

    • Mumps is a contagious viral infection caused by the mumps virus, primarily affecting the salivary glands, leading to swelling near the ears (parotitis), fever, headache, and muscle aches.
    • It spreads through respiratory droplets or direct contact with saliva.
    • While often mild, complications can include orchitis (testicular inflammation), oophoritis (ovarian inflammation), encephalitis, or hearing loss.
    • There is no specific treatment, but supportive care like rest, hydration, and pain management helps.
    • Vaccination with the MMR vaccine is the best prevention, offering 78–88% protection.

    Which free immunised diseases are provided under the Universal Immunization Programme (UIP)?

    • The UIP was launched in 1985 and became part of the National Health Mission in 2005 to provide free vaccination against vaccine-preventable diseases for children and pregnant women.
    • The programme now covers 12 diseases, including tuberculosis, polio, diphtheria, pertussis, measles, rubella, hepatitis B, pneumonia, rotavirus gastroenteritis, and Japanese encephalitis.
    • Key vaccines added over the years include Hepatitis B (2007), Pneumococcal Conjugate Vaccine (2017), Inactivated Polio Vaccine (IPV), and Measles-Rubella Vaccine.
    • The entire cost of vaccines is covered by the Government of India, funded through taxes, with an annual budget of ₹7,234 crore (US$870 million) as of 2022.
    • The programme covers all residents of India, including foreign residents, ensuring nationwide access to life-saving vaccines.
    • 4 new vaccines have been introduced, including the Adult Japanese Encephalitis vaccine and Pneumococcal Conjugate Vaccine, to address emerging health challenges.

    Note:

    Mission Indradhanush is a health initiative launched by the Government of India on 25 December 2014 by Union Health Minister J. P. Nadda. The mission aims to achieve 90% full immunization coverage in India by 2022, targeting vaccination against eight major vaccine-preventable diseases:

    • Diphtheria, Whooping Cough, Tetanus, Polio, Measles, Childhood Tuberculosis, Hepatitis B, and Meningitis & Pneumonia caused by Haemophilus influenza type B.
      Additionally, it covers Rotavirus Diarrhea and Japanese Encephalitis in specific states and districts.

    The mission targets 201 districts in its first phase, focusing on areas with the highest number of unvaccinated children, particularly in states like Uttar Pradesh, Bihar, Rajasthan, and Madhya Pradesh. The approach follows similar planning and administration as the Pulse Polio Immunisation (PPI) program.

     

    PYQ:

    [2016]  ‘Mission Indradhanush’ launched by the Government of India pertains to:

    (a) Immunization of children and pregnant women.

    (b) Construction of smart cities across the country.

    (c) India’s own search for the Earth-like planets in outer space.

    (d) New Educational Policy.

  • Challenges of Posthumous Assisted Reproduction (PAR)

    Why in the News?

    On October 4, 2024, the Delhi High Court allowed the parents of a deceased man to use his frozen semen for posthumous reproduction. The court cited a similar 2018 case in Germany and noted that the ART Act, 2021, doesn’t specifically address such situations.

    What is Posthumous Assisted Reproduction (PAR)?

    • Posthumous reproduction refers to the use of reproductive material (such as sperm or eggs) from a deceased individual to conceive a child after their death.
    • This can include posthumous sperm retrieval, where sperm is collected from a deceased man (typically through medical procedures shortly after death) for future use in assisted reproductive technologies, like in vitro fertilization (IVF).

    What does the Law says in India?

    • The Assisted Reproductive Technology (ART) Act, 2021 governs all fertility treatments and artificial insemination procedures.
    • The ART Rules, 2022 specify guidelines for posthumous sperm retrieval, but only in cases where the deceased was married, and the surviving spouse is the one requesting the retrieval.
      1. The Ministry of Health and Family Welfare (MoHFW) rejected the parents’ request, clarifying that the law does not apply to “post-mortem grandparenthood.”
    • The Surrogacy Regulation Act applies exclusively to married couples or women with medical needs for surrogacy and does not include grandparents as “intending grandparents.”

    Challenges posed by Posthumous Assisted Reproduction (PAR):

    PAR presents several legal, ethical, and social challenges:

    • Legal Issues: There’s a lack of clear laws governing the use of gametes after death, especially regarding consent from the deceased and questions about parentage and inheritance. The absence of specific regulations makes it difficult to establish who holds parental rights.
    • Ethical Concerns: Issues include the morality of using a deceased person’s genetic material, the commodification of human tissue, and concerns about grandparenthood. The emotional and ethical implications for surviving family members also come into play.
    • Social and Psychological Issues: Children born through PAR may face challenges related to knowing their deceased parent, and surviving partners may struggle with grief or guilt. Disputes over the deceased’s wishes can complicate family dynamics.
    • Biological Considerations: The long-term storage of gametes can lead to degradation, affecting the quality of embryos or sperm. Preserving genetic material for extended periods also presents technical challenges.
    • Cultural and Religious Concerns: Different cultures and religions may oppose posthumous reproduction, viewing it as morally or spiritually problematic.
    • Access and Equity: PAR can be expensive and may raise issues of access and commercialization, potentially leading to exploitation or unequal access to these technologies.

    PYQ:

    [2021] In the context of hereditary diseases, consider the following statements: 

    1. Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg.

    2. A child inherits mitochondrial diseases entirely from mother and not from father.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2

  • Making affordable generics more reliable

    Why in the News?

    India’s decentralised drug regulation system dominated by State Drug Regulatory Authorities causes inconsistent quality standards. Strengthening oversight is essential to ensure generics are as affordable and effective as branded drugs.

    How Reliable Are Generic Medicines?

    • Bioequivalence to Innovators: Generic medicines are bioequivalent to brand-name drugs, meaning they have the same active ingredient and are intended to work the same way.
    • Affordability and Accessibility: Generics significantly lower healthcare costs, making treatment more accessible, especially for low-income populations.
    • Challenges in Quality: Despite their potential, the reliability of generics has been questioned due to variability in therapeutic outcomes, often caused by differences in excipients, manufacturing processes, and bioequivalence thresholds.

    What are the main quality concerns associated with it?

    • Efficacy and Bioavailability: Studies have shown that while generics are bioequivalent to branded drugs, they may not always achieve the same therapeutic levels.
      • For example, a study on itraconazole showed that only 29% of patients using generic versions achieved the right drug levels in their body within two weeks, compared to 73% of patients using the original branded drug.
    • Manufacturing Variability: The manufacturing processes for generics can differ significantly from those of branded drugs. Variations in excipients (binders, fillers) and production methods can lead to differences in tablet hardness, dissolution rates, and overall drug stability. This variability can result in inconsistent therapeutic outcomes.
    • Regulatory Oversight: India’s decentralized drug regulation system contributes to inconsistent quality standards across states.
      • The Central Drugs Standard Control Organisation (CDSCO) has limited authority over State Drug Regulatory Authorities (SDRAs), leading to regulatory arbitrage where manufacturers exploit weaker oversight. Moreover, the lack of stringent enforcement of stability testing further jeopardizes the quality of generics available in the market.

    What regulatory reforms are needed?  

    • Centralisation of Drug Regulation: A comprehensive overhaul of India’s drug regulation system is necessary. Centralising oversight under the CDSCO would help enforce consistent quality standards across all states and reduce the risk of substandard drugs entering the market.
    • Enhanced Stability Testing Protocols: Uniform stability testing protocols should be established to ensure that all generics maintain their quality under various climatic conditions. This would involve periodic reassessment of approved generics to uphold their efficacy over time.
    • Stricter Impurity Standards: Aligning India’s Pharmacopoeia with international standards regarding permissible impurity levels would improve the overall quality of generic medicines available in the market.

    How can patient and healthcare provider perceptions of generics be improved? (Way forward)

    To enhance patient and healthcare provider confidence in generic medicines, several strategies can be employed:

    • Public Awareness Campaigns: Educating patients about the efficacy and safety of generics compared to branded drugs can help dispel misconceptions that higher-priced medications are superior.
    • Incentives for Healthcare Providers: Offering incentives for prescribing generics can encourage healthcare professionals to recommend these cost-effective alternatives more frequently.
    • Strengthening Quality Assurance: Implementing stronger regulatory frameworks and ensuring compliance with quality standards can build trust among both patients and providers regarding the reliability of generics.

    Mains PYQ:

    Q Why is there so much activity in the field of biotechnology in our country? How has this activity benefitted the field of biopharma? (UPSC IAS/2018)

  • What is Disease X and why should the world prepare for it?

    Why in the News?

    The outbreak reported in the first week of December 2024 in the Democratic Republic of Congo, which has already claimed more than 400 lives and is yet to be classified, has sparked concerns that it might be an example of Disease X.

    What is Disease X?

    • Definition: Disease X is a hypothetical term coined by the World Health Organization (WHO) in 2018 to represent an unknown pathogen that could potentially cause a global epidemic or pandemic.
    • Conceptual Origin: The term was created in the aftermath of the Ebola epidemic (2014-2016) to emphasise the need for preparedness against unpredictable infectious diseases.
    • Nature of Disease X: It serves as a placeholder for both “known unknowns” (threats we are aware of but do not fully understand) and “unknown unknowns” (threats we are not yet aware of). This acknowledges the likelihood of future pandemics without specifying their characteristics.
    • Potential Pathogens: Disease X could originate from a variety of sources, including viruses, bacteria, parasites, fungi, helminths, or prions. Historical data indicates that about 70% of emerging infectious diseases have zoonotic origins, meaning they are transmitted from animals to humans.
    • Emerging Disease Patterns: The emergence of new diseases is often linked to ecological disruptions caused by human activities such as deforestation and urbanisation, which increase contact between humans and wildlife.

    Why is it Important to Prepare for Disease X?

    • Global Health Security: Preparing for Disease X is essential for protecting public health globally. The emergence of new pathogens can lead to widespread illness and mortality, as demonstrated by COVID-19.
    • Unpredictable Nature of Outbreaks: The unpredictable emergence of infectious diseases necessitates robust surveillance and rapid response systems. Being prepared helps mitigate the impact of unforeseen threats.
    • Increasing Frequency of Outbreaks: The frequency of novel outbreaks has significantly increased since the mid-20th century due to environmental changes, urbanization, and human encroachment on wildlife habitats.
    • Economic Impact: Pandemics can have devastating economic consequences, disrupting trade, travel, and healthcare systems. Preparedness can help minimize these impacts.

    What should be done to prevent this? ( Way forward) 

    • Advances in Science and Technology: Investments in research, genomic sequencing, artificial intelligence, and public health infrastructure enhance our ability to detect and respond to emerging diseases quickly.
    • International Cooperation: Global collaboration is crucial for effective outbreak response. Initiatives like the WHO’s priority pathogen list and proposed Pandemic Treaty aim to foster a unified approach to health emergencies.
    • Equitable Access to Resources: Ensuring equitable access to diagnostics, treatments, and vaccines across all countries is vital for effective pandemic response, particularly in low- and middle-income nations.

    Mains PYQ:

    Q COVID-19 pandemic has caused unprecedented devastation worldwide. However, technological advancements are being availed readily to win over the crisis. Give an account of how technology was sought to aid the management of the pandemic. (UPSC IAS/2020)