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Home / News / Science News / New antibody cocktail 100% effective in blocking symptomatic COVID-19 infections
  • Science

    New antibody cocktail 100% effective in blocking symptomatic COVID-19 infections

    Ramya Patelkhana
    Written by
    Ramya Patelkhana
    Mail
    Last updated on Feb 06, 2021, 06:13 pm
    New antibody cocktail 100% effective in blocking symptomatic COVID-19 infections
    Credits:
  • Clinical trials at the University of Virginia (UVA) have suggested an antibody cocktail treatment being tested at UVA Health and other sites was 100% effective in preventing symptomatic COVID-19 infections among those exposed to the virus.

    Further, it was found that the virus accumulated in those who developed asymptomatic infections was less than usual, and their infections resolved within only a week.

    Here's more.

  • In this article
    The antibody cocktail is manufactured by Regeneron Pharmaceuticals Antibody cocktail currently in Phase 3 clinical trial Only treatment to prevent COVID-19 symptoms and infections after exposure Cocktail gives the immune system a head start: Petri This antibody cocktail may block variants of virus too Cocktail limits amount of virus transmission and length of infection 'There will always be place for this kind of therapy'
  • Details

    The antibody cocktail is manufactured by Regeneron Pharmaceuticals

    The antibody cocktail is manufactured by Regeneron Pharmaceuticals
    Credits:
  • "This is the first treatment shown to prevent COVID-19 after a known exposure, and offers protection for unvaccinated individuals caring for a family member with COVID-19," said UVA Health's Dr. William Petri Jr., one of the researchers leading the UVA trial.

    The interim clinical trial data was released by the antibody cocktail's manufacturer, Regeneron Pharmaceuticals.

  • Clinical trials

    Antibody cocktail currently in Phase 3 clinical trial

  • The antibody cocktail is currently in the Phase 3 trial, which aims to determine if the antibodies can block COVID-19 in those who've been exposed to the virus but haven't developed the disease yet. This process is called passive immunization.

    According to Petri, Regeneron would request emergency use authorization from the Food and Drug Administration to prepare the antibody cocktail for use within weeks.

  • Treatment

    Only treatment to prevent COVID-19 symptoms and infections after exposure

    Only treatment to prevent COVID-19 symptoms and infections after exposure
    Credits:
  • "The general idea is that an ounce of prevention is better than a pound of cure, so that's what this study is doing. It's giving the antibody as soon as there's a potential exposure to prevent household transmission," explained Petri.

    He also said this antibody cocktail is the only treatment that could prevent COVID-19 symptoms as well as infections after exposure to the virus.

  • Antibodies

    Cocktail gives the immune system a head start: Petri

  • "It sort of gives your immune system a head start," Petri further said, explaining about the antibody cocktail.

    "You'll eventually make these antibodies anyway, but by giving them very early, even at the time that you're exposed to the infection, they've been shown to prevent symptoms of COVID-19. They also prevent infection in about half of the patients that receive them," he said.

  • Variants

    This antibody cocktail may block variants of virus too

    This antibody cocktail may block variants of virus too
    Credits:
  • Moreover, the antibody cocktail is expected to block variants of coronavirus by using two different antibodies.

    "Two different antibodies against two different variants of the spike-like protein, that's much harder for the virus to mutate around, and so I think that's probably part of the reason why it's so effective," Petri explained.

    However, it's not a vaccine and isn't expected to offer permanent immunity.

  • Infection

    Cocktail limits amount of virus transmission and length of infection

  • Interestingly, clinical trials show the antibody cocktail also limits the amount of virus transmission as well as the length of infection, thereby reducing the amount of time that the virus can spread from one person to another.

    "Where the antibody cocktail failed to prevent infection, the infection is much shorter-lived, it's much less virus, and no symptoms, at all, most importantly," Petri said.

  • Immunity

    'There will always be place for this kind of therapy'

    'There will always be place for this kind of therapy'
    Credits:
  • As mentioned earlier, though the cocktail might not provide full immunity against COVID-19, it can work along with vaccines to prevent its spread and harmful effects.

    "Even when we get the vaccines to everyone...there are still going to be people who were not vaccinated or didn't have a response to the vaccine...there will always be a place for this kind of therapy," Petri stated.

  • Coronavirus
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