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Contract Tracing Problems: People Increasingly, ‘Have No Idea’ how they contracted COVID-19.

... As the coronavirus soars across the country, smashing daily records and surpassing nine million cases nationwide, tracing the path of the pandemic in the United States is no longer simply challenging. It has become nearly impossible.

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Remsdesvir: Some experts troubled about FDA approval for COVID-19 treatment

The United States reached a milestone, of sorts, when last week the Food and Drug Administration approved the first treatment for Covid-19.

The drug is called Veklury, although most people know it by its scientific name, remdesivir.

On Wednesday, its manufacturer, Gilead Sciences, said that remdesivir, which has been authorized for emergency use since the spring, had brought in $873 million in revenues so far this year and that it was the company’s second-best-selling drug in the third quarter, behind its H.I.V. drug, Biktarvy.

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New research shows that Covid-19 antibodies can neutralize the virus and last up to five months

There’s encouraging news about antibodies in a new paper published in the journal Science from researchers at New York City’s Mount Sinai Hospital. In their study of the antibody responses of patients with either mild or moderate Covid-19, antibody levels appeared to stay relatively stable for at least five months, and their presence was correlated with the inactivation of the virus.

Antibodies are molecules pumped out by the immune system in response to infection, and they have a role in preventing future infections, though exactly how they function within the context of Covid-19 isn’t clear yet. Scientists are urgently trying to figure out whether the presence of antibodies actually means a person is protected from future infection as well as how long antibodies last in the body. Knowing this is crucial, especially for vaccine development.

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