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Why have so few people received a second dose of the vaccine COVID-19 in India?
4 votes

Look at the graph carefully. In the second week of March less than half of 50M have been vaccinated. It is April's third week and if you look carefully almost as many people who had to take a second ...

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Why is it so difficult to develop vaccine for HIV?
Accepted answer
1 votes

Human Immunodeficiency Virus(HIV) positive means a person has an infection not a disease. Acquired Immunodeficiency Syndrome(AIDS) is caused if infected by HIV. Before we dig into why making a vaccine ...

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