The answer to stopping the coronavirus may be up the nose - Economic Times

The currently available Covid-19 vaccines are injected into peoples arm muscles and are highly capable at combating the virus once people are infected. But they are not as successful at preventing people from getting infected to begin with. To do that, you id…

The Covid-19 vaccines authorized for use today were developed at unprecedented speed and surpassed expectations in how well they worked. The billions of people who are protected by them have avoided … [+5631 chars]

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