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No clear answer on Covid-19 origin, WHO experts conclude after three-year-long probe
After more than three years of work, WHO's expert group was unable to get the necessary data to evaluate whether or not Covid-19 was the result of a lab accident read more
An expert group charged by the World Health Organization to investigate how the COVID-19 pandemic started released its final report Friday, reaching an unsatisfying conclusion: Scientists still aren't sure how the worst health emergency in a century began.
At a press briefing on Friday, Marietjie Venter, the group's chair, said that most scientific data supports the hypothesis that the new coronavirus jumped to humans from animals.
That was also the conclusion drawn by the first WHO expert group that investigated the pandemic's origins in 2021, when scientists concluded the virus likely spread from bats to humans, via another intermediary animal. At the time, WHO said a lab leak was 'extremely unlikely.'
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Venter said that after more than three years of work, WHO's expert group was unable to get the necessary data to evaluate whether or not COVID-19 was the result of a lab accident, despite repeated requests for hundreds of genetic sequences and more detailed biosecurity information that were made to the Chinese government.
'Therefore, this hypothesis could not be investigated or excluded,' she said. 'It was deemed to be very speculative, based on political opinions and not backed up by science.' She said that the 27-member group did not reach a consensus; one member resigned earlier this week and three others asked for their names to be removed from the report.
Venter said there was no evidence to prove that COVID-19 had been manipulated in a lab, nor was there any indication that the virus had been spreading before December 2019 anywhere outside of China.
'Until more scientific data becomes available, the origins of how SARS-CoV-2 entered human populations will remain inconclusive,' Venter said, referring to the scientific name for the COVID-19 virus.
WHO Director-General Tedros Adhanom Ghebreyesus said it was a 'moral imperative' to determine how COVID began, noting that the virus killed at least 20 million people, wiped at least $10 trillion from the global economy and upended the lives of billions.
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Last year, the AP found that the Chinese government froze meaningful domestic and international efforts to trace the virus' origins in the first weeks of the outbreak in 2020 and that WHO itself may have missed early opportunities to investigate how COVID-19 began.
U.S. President Donald Trump has long blamed the emergence of the coronavirus on a laboratory accident in China, while a U.S. intelligence analysis found there was insufficient evidence to prove the theory.
Chinese officials have repeatedly dismissed the idea that the pandemic could have started in a lab, saying that the search for its origins should be conducted in other countries.
Last September, researchers zeroed in on a short list of animals they think might have spread COVID-19 to humans, including racoon dogs, civet cats and bamboo rats.
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In addition to focused attention on increasing vaccination coverage, India's Universal Immunisation Programme (UIP) embodies a comprehensive range of vaccines recommended by the World Health Organisation (WHO). Till 2013, there were only six available vaccines in the program. From 2014, six new vaccines (namely Inactivated Polio-virus Vaccine, Rotavirus Vaccine (RVV), Pneumococcal Conjugate Vaccine (PCV), Measles-Rubella Vaccine, Adult Japanese Encephalitis Vaccine and Tetanus-Diphtheria Vaccine) have been introduced in the programme. Currently, India's UIP covers 12 vaccine-preventable diseases and has seen significant expansion. With continued focus on improving vaccine coverage, India has taken a proactive and inclusive approach to reach underserved populations. The Govt of India, in consultation with all States/UTs, has launched targeted campaigns to address challenges among zero-dose children, particularly in urban slums, peri-urban areas, migratory populations, hard-to-reach regions, and communities affected by vaccine hesitancy. These efforts are also aligned with the National goal of eliminating Measles and Rubella. "To amplify our reach, we are leveraging technology and community engagement. The U-WIN platform tracks immunisation status digitally, ensuring no child is missed. Public awareness campaigns are being intensified using mass media, community radio, social media, and even street plays to educate families. Healthcare workers, ASHAs, and ANMs will go door-to-door, not just to vaccinate, but to sensitise the beneficiaries about the benefits of vaccination," the ministry said in a press release. Some key initiatives include: Zero Dose Implementation Plan 2024: Rolled out across 143 districts in 11 states with a high burden of unvaccinated children. Mission Indradhanush (Since 2014): Intensified in 2017 in collaboration with state governments, it has vaccinated 5.46 crore children and 1.32 crore pregnant women previously unreached or under-vaccinated. Pulse Polio Campaigns: Through National Immunisation Days (NIDs) and Sub-National Immunisation Days (SNIDs), India has maintained polio-free status since Health and Nutrition Days (VHNDs): Organized regularly for immunization and outreach activities at the community level. Multi-tiered Task Forces: State (STFI), District (DTFI), and Block (BTFI) level task forces ensure coordinated and effective implementation. Regular IEC (Information, Education, Communication) Campaigns: Help increase awareness and combat vaccine hesitancy. The annual birth cohort in India (2.6 crore) exceeds the total population of several countries, including New Zealand, Australia, Finland, and Switzerland. Given the varying sizes of the countries across the globe, the percentage comparison shows it at par with the vaccination coverage levels observed in many high-income countries for e.g., New Zealand (DTP-1 93 per cent), Germany & Finland (DPT-3 91 per cent), Sweden (MCV-1 93 per cent), Luxembourg (MCV-2 90 per cent), Ireland (PCV-3 83 per cent), United Kingdom of Great Britain and Northern Ireland (Rota C 90 per cent). (WUNEIC report 2023). The comparative results of countries on zero dose children as a percentage of the total population shows that Yemen (1.68 per cent), Sudan (1.45 per cent), Angola (1.1 per cent), Afghanistan (1.1 per cent), Nigeria (0.98 per cent), DR Congo (0.82 per cent), Ethiopia (0.72 per cent), Indonesia (0.23 per cent), Pakistan (0.16 per cent) have far more zero dose children as a percentage of their population compared to India's (0.11 per cent during 2023 as per the last Wuneic report released. Any comparison of India with any other countries with high burden zero-dose children needs to take into consideration India's large population size and high vaccination coverage rate. Therefore, any interpretation or analysis based on isolated factors does not lend credence to the country's progress on its immunisation program, said the ministry. The Universal immunisation program has always been prioritised by the Government of India to ensure that the children of our country are protected against deadly diseases. Elimination of Polio in 2014 and Maternal & Neonatal Tetanus in 2015, and the recent launch of the Measles Rubella campaign in 2025 is a testament to the fact. With focused strategies and committed healthcare workers, the endeavour will always be last-mile delivery to ensure comprehensive vaccination coverage. Vaccination remains one of the most powerful and cost-effective public health interventions. India's unwavering commitment to immunization is evident through its Universal Immunization Programme (UIP), which provides free vaccination services annually to 2.9 crore pregnant women and 2.6 crore infants (0-1 year).
