With a coronavirus vaccine still months off, companies are rushing to test what may be the next best thing: drugs that deliver antibodies to fight the virus right away, without having to train the immune system to make them.
ROME (AP) — The number of confirmed coronavirus cases worldwide topped 20 million, more than half of them from the United States, India and Brazil, as Russia on Tuesday became the first country to approve a vaccine against the virus.
For a spiky sphere just 120 nanometers wide, the coronavirus can be a remarkably cosmopolitan traveler.
Spewed from the nose or mouth, it can rocket across a room and splatter onto surfaces; it can waft into poorly ventilated spaces and linger in the air for hours. At its most intrepid, the virus can spread from a single individual to dozens of others, perhaps even a hundred or more at once, proliferating through packed crowds in what is called a superspreading event.
GENEVA (Reuters) - The World Health Organization warned on Monday that, despite strong hopes for a vaccine, there might never be a “silver bullet” for COVID-19, and the road to normality would be long.
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