"Even as the number of cases and deaths have surged around the USA, the survival rate of those who are infected has improved significantly. A recent study found that by June, the mortality rates of those hospitalized had dropped to 9 percent from 17 percent at the start of the pandemic, a trend that has been echoed in other studies. Researchers say the improvement is partly because of the steroid dexamethasone, which boosts survival rates of severely ill patients by tamping down the immune system rather than blocking the virus. Patients may also be seeking care earlier in the course of the illness. And masks and social distancing may reduce viral exposure.
Researchers tested remdesivir, as well as monoclonal antibodies, gathering the data that showed they were indeed effective to some extent. Remdesivir, which stops viruses from replicating inside cells, can modestly shorten the time patients need to recover, but has no effect on mortality. Monoclonal antibodies, which stop the virus from entering cells, can be very potent, but only when given before people are sick enough to be hospitalized."
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