This study provides hope about coronavirus immunity in humans

[Chris Smith]

• The duration of coronavirus immunity remains a mystery, as the virus is too new for health officials to have found an answer.
• A new study does show that COVID-19 immunity works in humans just like it did in animal testing. Three sailors had SARS-CoV-2 neutralizing antibodies out of a 122-person crew.
• The virus started spreading while the crew was at sea, and 104 people got COVID-19 by the time they returned. The three people who had neutralizing antibodies were not among the infected.

One of the most discussed COVID-19 topics concerns immunity to the novel coronavirus. And the most important unanswered question concerns the duration of COVID-19 immunity. How long does it last? How soon will COVID-19 survivors be reinfected? How much protection against infection will a vaccine offer? What about monoclonal antibody drugs that are supposed to both treat COVID-19 and provide limited protection?

The good news is that scientists have been able to prove that infected monkeys who survived the virus would not get reinfected again a few weeks after initial exposure. Some of the most advanced vaccine candidates showed that the drugs work on the same species of monkeys. But the virus is just too new when it comes to infecting humans for health officials to be able to estimate the duration of human immunity to the virus. However, we might have the first proof that coronavirus immunity works in humans. Surprisingly, it's not coming from vaccine testing.

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This study provides hope about coronavirus immunity in humans originally appeared on BGR.com on Mon, 24 Aug 2020 at 16:44:45 EDT. Please see our terms for use of feeds.

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