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Tweet In 1977 a flu broke out in northeast China which eventually spread to Russia and then around the world. It eventually took the lives of approximately 700,000 people around the world most of whom were young. It came to be known as the “Russian flu” because Russia was the first country to report it to the WHO. Scientists who examined its DNA concluded it was nearly identical to a previous strain of the flu virus which had caused an outbreak between 1949 and 1950. In nature, the flu doesn’t remain unchanged for 27 years as it circulates. So the fact that the “Russian flu” was nearly identical to the earlier strain eventually led to the conclusion that the Russian flu was likely the result of a lab leak or possibly a failed attempt to inoculate people with live attenuated virus.

New yorkUnited statesCity university of new yorkWorld health organizationSerum instituteChinese academy of medical sciencesCity universityChinese academyMedical sciencesSoviet unionPeking vaccineபுதியது யார்க்ஒன்றுபட்டது மாநிலங்களில்நகரம் பல்கலைக்கழகம் ஆஃப் புதியது யார்க்உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந்சீரம் நிறுவனம்