RIO DE JANEIRO, BRAZIL - The rush to prevent economies from collapse due to the impact of Covid-19 may result in a vaccine that prevents critical cases or death from the disease, but not coronavirus contagion.
While defeating the virus is the ultimate goal, early vaccines may be limited as to what they can offer, according to Robin Shattock, a professor at Imperial College London who leads the development of an experimental vaccine.
"Is it protection against contagion?" Shattock said. "Is it protection against the disease? Is it protection against a serious disease? It's quite possible that a vaccine . . .