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Soutik Biswas
soutikBBC
THREAD: In 1894, Waldemar Haffkine, a Russian Jew trained in Paris, travelled to Calcutta armed with a cholera vaccine. The slums were battling an outbreak of the disease. The 33-year-old
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THREAD on why the Pfizer vaccine might not work for India:The vaccine has to be kept in ultra-cold temperature at below -80C. https://bbc.in/3pfso2a .This could pose major logistical challenges for
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