WASHINGTON -- Scientists are dusting off some decades-old vaccines against other germs to see if they could provide a little stopgap protection...
WASHINGTON -- Scientists are dusting off some decades-old vaccines against other germs to see if they could provide a little stopgap protection against Covid-19 until a more precise shot arrives.
The World Health Organization issued a stern warning Monday not to use the TB vaccine against Covid-19, unless and until studies prove it works. Rapid studies are needed to tell if there could be "long-ranging effects for any second wave of this,” said Gallo, who directs the Institute of Human Virology at the University of Maryland School of Medicine.
BCG is given mostly to newborns in developing countries, and it offers only partial protection against TB, a bacterial infection. But observational studies showed during childhood, the vaccinated tots had better overall survival, including from respiratory viruses.
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