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    You are at:Home»All»The vaccines are working. That’s why we shouldn’t panic about variants.
    All March 9, 2021

    The vaccines are working. That’s why we shouldn’t panic about variants.

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    Several new coronavirus variants have been identified in the United States in recent weeks, and scientists are grappling with whether these strains threaten the country — and, if so, how.

    One thing experts agree on, though, is that the available vaccines have outperformed expectations — even when it comes to what are known as the “variants of concern.”

    “This virus is not invincible, and despite all these variants, the vaccines are working great,” said Jeremy Kamil, an associate professor of microbiology and immunology at Louisiana State University Health Shreveport. “That is really outstanding and people should be celebrating that.”

    “There are certain variants that are more transmissible, and we have strong data on that, but the thing people should take away from the variant story is just: Don’t let your guard down,” said Kamil, who co-led a research team that in February identified a previously undetected variant in Louisiana.

    “When a pathogen jumps into humans, it’s not perfectly formed for tearing through a human population, so we would expect to see evolution toward greater infectiousness,” said Andrew Read, a professor of biology and entomology at Penn State University, who specializes in the evolutionary genetics of infectious diseases.

    As such, people should redouble mitigation efforts, such as practicing social distancing and wearing a mask in public, to prevent an uptick in new infections as more transmissible variants emerge.

    “It doesn’t change what we should be doing anyway,” Read said. “It’s just a stronger argument for making sure the right restrictions are there at the right times.”

    And one important tool to fight the spread of variants are the vaccines, he added.

    All three vaccines appear to offer strong protection against the U.K. variant. In early analyses, both the Moderna and the Pfizer vaccines were found to be less protective against the South African variant, although neutralizing antibodies, which can bind to viruses and block them from getting into cells, remained above protective levels for both.

    These early results are important, Kamil said, because they demonstrate that the vaccines are working.

    “When it comes to the variants, we have a reasonably strong picture that if you’re vaccinated, you’re going to be protected from severe outcomes, such as hospitalization and death,” he said.

    And even though certain vaccines appear to be less effective against the South African strain, the shots still seem to offer strong protection from developing severe illness from that strain.

    “Protection from infection and disease are two different things,” Kamil said. In other words, a vaccinated person could still become infected with the coronavirus, but that infection likely wouldn’t lead to illness. “The worst case scenario is you might get sick, but you likely wouldn’t have to go to the hospital.”

    This means that even if variants cause another surge of infections, hospitals across the country will hopefully be spared being pushed to the brink, as has happened during previous waves.

    “Once we’ve vaccinated almost everybody in the medium- to high-risk group, and as long as the vaccines have strong disease-preventing properties against the various strains, then that will get us out of another really rough spot,” said Jennie Lavine, a postdoctoral fellow at Emory University.

    “I’m amazed that these vaccines are so good right off the block,” Read said. “They haven’t even been optimized yet and they work so well. We shouldn’t get distracted from that huge triumph.”

    And while it’s possible that the coronavirus could mutate in a way that enables it to escape the protection induced by vaccines, there is no evidence to suggest that that has happened yet.

    “Nothing in the variants that we’ve seen so far show vaccines going off a cliff where they become useless,” Read said. “They might become slightly less effective and we’ll have to make tweaks, but we haven’t seen anything coming close to perfectly escaping the vaccines.”

    Still, it’s important for people to stay vigilant, even in the face of good news.

    “Whatever we were doing before in terms of nonpharmaceutical interventions — social distancing and wearing a mask — we need to step it up to keep transmission down,” Lavine said.

    But for those who have yet to be vaccinated, and when the vaccinated are out in public, the standard mitigation measures should remain in effect.

    “Stay calm, wear a mask and get vaccinated when you can,” Kamil said. “It’s a very simple message.”

    Denise Chow is a reporter for NBC News Science focused on general science and climate change.

    Category: Science

    Source: NBC

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