Text Size:A- A+
The coronavirus disease (Covid-19) first appeared in the Wuhan district of Hubei province of China in early December 2019. The first case was reported by China on January 7, 2020, and this aroused variable interest worldwide, with most countries initially ignoring the novel infection. Fortunately, Indian health authorities sensed the danger, largely because the country has always been alert to new infections. The scientific think-tank at the Indian council of Medical Research (ICMR) became active immediately and the first laboratory confirmed case was identified at ICMRs National Institute of Virology (NIV), Pune, sometime towards the end of January.
A look at the world Covid meter shows that there is striking variation in mortality rates across countries, ranging from 0.2% to 15% depending on age, the smoking habit and pre-existing co-morbidities. It may be too early to tell, but in general, countries in the Northern hemisphere have faced the maximum brunt, and those in the Southern hemisphere (and those located proximate to the Equator) have so far escaped high infection numbers.
Three factors seem to be playing a role in the observed lower numbers in India with almost zero occurrence of severe Covid-19 cases (until now). First, broad-based immunity in the population due to the extensive microbial load. The Indian population has been exposed to a vast variety of pathogens, including bacteria, parasites and viruses leading to the generation of broad specific memory T-cells in the system, ready to attack additional foreign invaders.
For example, the three main killers of Tuberculosis, HIV and Malaria have plagued India, Africa and several countries in the Southern hemisphere much more than the European and North American nations. In the context of CoV-2 coronavirus, the beneficial role of chloroquine and hydroxychloroquine has been much talked about and debated, while there has already been an extensive usage of this drug at the community level in India this too may ultimately prove beneficial.
Also read: In fight against coronavirus, India has age on its side. Numbers show
Second, epigenetic factors that include environment and food habits may also play a beneficial role for countries such as India; much literature is already available in Ayurveda and other Indian systems of medicine on the definitive beneficial effects of Indian spices in augmenting immunity.
Third, and most important, is the possible role of immune response genes in the Indian population. These genes are collectively referred to as comprising the human leucocyte antigen system or simply, the HLA genes. Their main biological function is to present invading foreign antigens to the immune systems, since T-cells, which act as the bodys soldiers come into play only when pathogens are presented to them in a more formal manner in association with HLA genes. In other words, the pathogen must first attach to compounds created by HLA genes before T-Cells attack it. If no such compounds are produced by the body, then the T-Cells are ineffective. As a consequence of the microbial load, the Indian population possesses a high genetic diversity of HLA, much more extensive than Caucasian populations. Indeed, studies by the author at the All India Institute of Medical Sciences, New Delhi, over several decades revealed the presence of several novel HLA genes and their alleles in the Indian population, most of which do not occur in other ethnic groups. Such genetic diversity of HLA could affect viral fitness.
The question then is:Why should genetic variation in HLA genes play a role in the Covid-19 progression? One hint comes from earlier studies in related viral diseases: Certain genetic variants of the HLA system provide protection against such viruses, while others increase genetic susceptibility to them. Another source of indirect evidence comes from recent clinical Covid-19 studies which showed that rapid T-cell response appears to be crucial for recovery from Covid-19, and reduced functional diversity of T cells in peripheral blood could predict progression of Covid-19.
The big question is:Does this give Indians a better chance at fighting the virus effectively? From the epidemiological data so far, it seems so (although much more extensive research is required). However, it is important for us to keep viral loads in check and below the threshold levels. In this context, the complete lockdown announced by the government is highly timely and most desirable. It is imperative that the virus replication cycle gets disrupted as early as possible before it gains numbers that may become difficult for us to counter.
To this end, the images of crowds gathering in several places whether for panic buying or interstate movements are disturbing. They could jeopardise all efforts and mitigate whatever natural advantages we enjoy.
The State must act fast to enforce the lockdown, even forcibly if necessary. India may be the outlier in fighting the coronavirus infection and succeed in keeping the overall numbers lower than the rest of the world with minimal deaths.
Narinder Kumar Mehra is the ICMR National chair and former Dean of the All India Institute of Medical Sciences, New Delhi
The views expressed are personal
By special arrangement with
Also read: Indias fight against Covid-19 needs wartime industrial production, not more red tape
ThePrint is now on Telegram. For the best reports & opinion on politics, governance and more, subscribe to ThePrint on Telegram.
Subscribe to our YouTube channel.
Read the original:
Indians seem to have genetic and regional advantages in fight against coronavirus - ThePrint
- BENITEC BIOPHARMA INC. Management's Discussion and Analysis of Financial Condition and Results of Operations (form 10-Q) - Marketscreener.com - February 13th, 2023 [February 13th, 2023]
- CENTOGENE to Participate in Upcoming Conferences in February in the Lead Up to Rare Disease Day - Marketscreener.com - February 7th, 2023 [February 7th, 2023]
- Gene | Definition, Structure, Expression, & Facts | Britannica - January 27th, 2023 [January 27th, 2023]
- New gene therapy delivers treatment directly to brain - January 27th, 2023 [January 27th, 2023]
- Indian Pharma Congress: Gene-cell therapy, preventive medicine future of health care, says expert - Economic Times - January 25th, 2023 [January 25th, 2023]
- A blood test that identifies people at higher risk of miscarriage? Thats the goal of this award-winning Rutgers med student. - The Philadelphia... - January 19th, 2023 [January 19th, 2023]
- Gene Therapy: Genes As Medicine | Pfizer - January 6th, 2023 [January 6th, 2023]
- How Genomics will ensure a risk-free and beneficial treatment for good health and well-being - The Financial Express - December 28th, 2022 [December 28th, 2022]
- Regenerative Medicine Advanced Therapy Designation | FDA - December 18th, 2022 [December 18th, 2022]
- 3576 - Gene ResultCXCL8 C-X-C motif chemokine ligand 8 [ (human)] - November 23rd, 2022 [November 23rd, 2022]
- Study identifies new gene that drives colon cancer - EurekAlert - October 17th, 2022 [October 17th, 2022]
- Updated Stroke Gene Panels: Rapid evolution of knowledge on monogenic causes of stroke | European Journal of Human Genetics - Nature.com - October 17th, 2022 [October 17th, 2022]
- The challenges of translating CRISPR to the clinic - Labiotech.eu - October 17th, 2022 [October 17th, 2022]
- Editas Medicine Presents Preclinical Data on EDIT-103 for Rhodopsin-associated Autosomal Dominant Retinitis Pigmentosa at the European Society of Gene... - October 17th, 2022 [October 17th, 2022]
- 'We have to find a way': FDA seeks solutions to aid bespoke gene therapy - BioPharma Dive - October 17th, 2022 [October 17th, 2022]
- Mathematical model could bring us closer to effective stem cell therapies - Michigan Medicine - October 17th, 2022 [October 17th, 2022]
- Approval, Commercialization Highlighted at Cell & Gene Meeting on the Mesa - Genetic Engineering & Biotechnology News - October 17th, 2022 [October 17th, 2022]
- CANbridge-UMass Chan Medical School Gene Therapy Research in Oral Presentation at the European Society of Gene and Cell Therapy (ESGCT) 29th Annual... - October 17th, 2022 [October 17th, 2022]
- Depression Treatment: How Genetic Testing Can Help Find the Right Medication - Dunya News - October 17th, 2022 [October 17th, 2022]
- The Risk-Reward Proposition for CGT Clinical Trials - Applied Clinical Trials Online - October 17th, 2022 [October 17th, 2022]
- Precision Medicine Could Get Even More Precise With Allarity Therapeutics Next-Generation Diagnostics - Benzinga - October 17th, 2022 [October 17th, 2022]
- Decibel Therapeutics Receives FDA Clearance of IND Application for DB-OTO, a Gene Therapy Product Candidate Designed to Provide Hearing to Individuals... - October 17th, 2022 [October 17th, 2022]
- Time for your medicine: unlocking the power of our body clocks - The Guardian - October 17th, 2022 [October 17th, 2022]
- Replay establishes distinguished Scientific Advisory Board of genomic medicine and cell therapy experts - Yahoo Finance - October 17th, 2022 [October 17th, 2022]
- Scientists Reappraise the Role of Zombie Cells That Anti-aging Medicine Has Sought to Eliminate - Neuroscience News - October 17th, 2022 [October 17th, 2022]
- Forge Biologics Announces Updated Positive Clinical Data in RESKUE, a Novel Phase 1/2 Gene Therapy Trial for Patients with Krabbe Disease - Business... - October 17th, 2022 [October 17th, 2022]
- Gene Expression Signatures Are Analyzed for Biomarkers of Response in HCC - Targeted Oncology - October 17th, 2022 [October 17th, 2022]
- NHS England World-first national genetic testing service to deliver rapid life-saving checks for babies and kids - NHS England - October 17th, 2022 [October 17th, 2022]
- The proteinprotein relationship that could mend a broken heart - RegMedNet - October 17th, 2022 [October 17th, 2022]
- Study finds microprotein correlated to Alzheimers risk - Daily Trojan Online - October 11th, 2022 [October 11th, 2022]
- Passage Bio Announces Appointment of William Chou, M.D. as Chief Executive Officer - Yahoo Finance - October 11th, 2022 [October 11th, 2022]
- Gene Therapy Rapidly Improves Night Vision in Adults with Congenital Blindness - Newswise - October 11th, 2022 [October 11th, 2022]
- Scientists Discover Protein Partners that Could Heal Heart Muscle | Newsroom - UNC Health and UNC School of Medicine - October 11th, 2022 [October 11th, 2022]
- The Pros and Cons of Lentiviral and Adeno-Associated Viral Vectors - The Medicine Maker - October 11th, 2022 [October 11th, 2022]
- Insights & Outcomes: Foreign DNA, quantum potholes and relapsing fever - Yale News - October 11th, 2022 [October 11th, 2022]
- Expediting IND applications with drug master files - BioPharma Dive - October 11th, 2022 [October 11th, 2022]
- UNC School of Medicine Awarded $3 Million to Lead Study to Reduce PTSD Frequency, Severity | Newsroom - UNC Health and UNC School of Medicine - October 11th, 2022 [October 11th, 2022]
- Lineage to Present at Alliance for Regenerative Medicine 2022 Cell & Gene Meeting on the Mesa - businesswire.com - October 8th, 2022 [October 8th, 2022]
- The Next Crispr Gene Editing IPO Could Be Near - Henry Herald - October 8th, 2022 [October 8th, 2022]
- 10-year CRISPR anniversary: How gene editing revolutionized medicine, and what lies ahead - Genetic Literacy Project - October 8th, 2022 [October 8th, 2022]
- Blood from a baby at birth can be gene sequenced to prevent diseases - USA TODAY - October 8th, 2022 [October 8th, 2022]
- What doctors wish patients knew about breast-cancer prevention - American Medical Association - October 8th, 2022 [October 8th, 2022]
- Growth in Cell and Gene Therapy Market - Pharmaceutical Technology Magazine - October 8th, 2022 [October 8th, 2022]
- Gene Editing Service Market 2022 : Top Players to Reflect Impressive Growth Rate till 2029: Caribou Biosciences, CRISPR Therapeutics, Merck KGaA,... - October 8th, 2022 [October 8th, 2022]
- Tip Sheet: $78 million to support new precision oncology institute, update on experimental gene therapy for herpes and the launch of Fred Hutch's new... - October 8th, 2022 [October 8th, 2022]
- Cell and Gene Therapy: Rewriting the Future of Medicine - Technology Networks - October 2nd, 2022 [October 2nd, 2022]
- Growth in Cell and Gene Therapy Market - BioPharm International - October 2nd, 2022 [October 2nd, 2022]
- CRISPR Therapeutics Announces FDA Regenerative Medicine Advanced Therapy (RMAT) Designation Granted to CTX130 for the Treatment of Cutaneous T-Cell... - October 2nd, 2022 [October 2nd, 2022]
- BioMarin Resubmits Biologics License Application (BLA) for Valoctocogene Roxaparvovec AAV Gene Therapy for Severe Hemophilia A to the FDA - PR... - October 2nd, 2022 [October 2nd, 2022]
- Fighting Breast and Ovarian Cancer With a Lupus Antibody - Yale School of Medicine - October 2nd, 2022 [October 2nd, 2022]
- This gene therapy company is testing new tech to 'switch off' diabetes and obesity with a pill - Euronews - October 2nd, 2022 [October 2nd, 2022]
- Tenaya Therapeutics to Participate in Inaugural Hypertrophic Cardiomyopathy Medical Societys 2022 Scientific Sessions - Yahoo Finance - October 2nd, 2022 [October 2nd, 2022]
- Risk of Alzheimer's dementia may be predicted with help of new tool Washington University School of Medicine in St. Louis - Washington University... - October 2nd, 2022 [October 2nd, 2022]
- Tiny Sea Creature's Genes Shed Light on Evolution of Immunity - UPMC - October 2nd, 2022 [October 2nd, 2022]
- Who will get the call from Stockholm? It's time for STAT's 2022 Nobel Prize predictions - STAT - October 2nd, 2022 [October 2nd, 2022]
- Excision BioTherapeutics Awarded California Institute for Regenerative Medicine (CIRM) Grant to Support Ongoing Phase 1/2 Trial Evaluating EBT-101 as... - October 2nd, 2022 [October 2nd, 2022]
- NeuroVoices: Emma Ciafaloni, MD, on the Vast Expansion of Innovative Approaches to Duchenne Muscular Dystrophy - Neurology Live - October 2nd, 2022 [October 2nd, 2022]
- COVID mRNA Jabs and Testing Kicked Off This Industry of Drug Development: Here's What You Need to Know - The Epoch Times - October 2nd, 2022 [October 2nd, 2022]
- Kidney resident macrophages have distinct subpopulations and occupy distinct microenvironments - University of Alabama at Birmingham - October 2nd, 2022 [October 2nd, 2022]
- Nobel Prize for medicine: the full list of winners - The National - October 2nd, 2022 [October 2nd, 2022]
- The surprising link between circadian disruption and cancer may have to do with temperature - EurekAlert - October 2nd, 2022 [October 2nd, 2022]
- The global live cell imaging market is expected to grow at a CAGR of 8.44% during 2022-2027 - Yahoo Finance - October 2nd, 2022 [October 2nd, 2022]
- Chroma Medicine Announces Formation of Scientific Advisory Board of Global Experts in Gene Editing and Cell and Gene Therapy - PR Newswire - September 20th, 2022 [September 20th, 2022]
- Ring Therapeutics Announces Issuance of U.S. Patent for its Anellovector Compositions - Yahoo Finance - September 20th, 2022 [September 20th, 2022]
- Cholesterol gene mutation: Why would a healthy 27-year-old have severe heart problems? - 69News WFMZ-TV - September 20th, 2022 [September 20th, 2022]
- Gene Therapy for Severe Hemophilia B Could Be More Cost Effective Than Current Treatments - Managed Healthcare Executive - September 20th, 2022 [September 20th, 2022]
- AVROBIO Receives Rare Pediatric Disease Designation from U.S. Food and Drug Administration (FDA) for First Gene Therapy in Development for Cystinosis... - September 20th, 2022 [September 20th, 2022]
- The Biggest CGT Breakthroughs Through the Eyes of Our 2022 Power List - The Medicine Maker - September 20th, 2022 [September 20th, 2022]
- Leading Virus Researcher to Chair UVA's Department of Microbiology, Immunology and Cancer Biology - UVA Health Newsroom - September 20th, 2022 [September 20th, 2022]
- Work remains on Tay-Sachs and other Ashkenazi genetic disorders J. - The Jewish News of Northern California - September 20th, 2022 [September 20th, 2022]
- Study Shows Genetic Link to Moving to the Beat of Music - Newswise - September 20th, 2022 [September 20th, 2022]
- Viewpoint: In the post Roe v Wade world, what changes should a biology textbook writer make to address the medical repercussions of Dobbs? - Genetic... - September 20th, 2022 [September 20th, 2022]
- Alnylam Receives Approval in Europe for AMVUTTRA (vutrisiran) for the Treatment of Hereditary Transthyretin-mediated (hATTR) Amyloidosis in Adult... - September 20th, 2022 [September 20th, 2022]
- CSL flexes gene therapy muscle with latest drug - Sydney Morning Herald - September 20th, 2022 [September 20th, 2022]
- The MIT Press releases new book on the science of the heart from cardiac expert Dr. Sian Harding - EurekAlert - September 20th, 2022 [September 20th, 2022]
- Global Pharmaceutical Contract Manufacturing Market is projected to reach a market value of US$329.7 Billion in 2032: Visiongain Reports Ltd - Yahoo... - September 20th, 2022 [September 20th, 2022]
- Alzheon Reports Industry-Leading Biomarker, Brain Preservation and Clinical Effects Following 12 Months of Treatment in Phase 2 Trial of Oral ALZ-801... - September 20th, 2022 [September 20th, 2022]
- Do You Have Lung Cancer With An EGFR Mutation? If So, The Drug Tagrisso Might Be Right For You Based On New Results From A 'Practice Changing' Trial -... - September 20th, 2022 [September 20th, 2022]
- Getting rid of unwanted transformed cells: Possible new directions in cancer therapy - EurekAlert - September 20th, 2022 [September 20th, 2022]
- Sven Kili on reconvening with the ISCT - The Medicine Maker - September 14th, 2022 [September 14th, 2022]