Mutations

mRNA Vaccines May Offer Lasting Protection, Study Finds

Mon, 2021-06-28 09:50 — mike kraft

A study finds that the Pfizer and Moderna vaccines could offer protection for years

The vaccines made by Pfizer-BioNTech and Moderna set off a persistent immune reaction in the body that may protect against the coronavirus for years, scientists reported on Monday.

The findings add to growing evidence that most people immunized with the mRNA vaccines may not need boosters, so long as the virus and its variants do not evolve much beyond their current forms — which is not guaranteed. People who recovered from Covid-19 before being vaccinated may not need boosters even if the virus does make a significant transformation.

“It’s a good sign for how durable our immunity is from this vaccine,” said Ali Ellebedy, an immunologist at Washington University in St. Louis who led the study, which was published in the journal Nature.

The study did not consider the vaccine made by Johnson & Johnson, but Dr. Ellebedy said he expected the immune response to be less durable than that produced by mRNA vaccines.

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Booster may be needed for J&J shot as Delta variant spreads

Sat, 2021-06-26 11:04 — mike kraft

Booster may be needed for J&J shot as Delta variant spreads, some experts already taking them Infectious disease experts are weighing the need for booster shots of the Pfizer/BioNTech (PFE.N), or Moderna (MRNA.O) mRNA-based vaccines for Americans who received Johnson & Johnson's (JNJ.N) one-dose vaccine due to the increasing prevalence of the more contagious Delta coronavirus variant.

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Explainer: There are at least 200 known cases of the Delta Plus coronavirus variant worldwide.

Fri, 2021-06-25 09:57 — mike kraft

What we know about the Delta Plus coronavirus variant A new and slightly changed version of the Delta coronavirus variant is spreading in a number of countries including the United Kingdom, United States and India, health officials say. Jessie Yeung, CNN CNN

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COVID-19 Booster Issue" WHO estimates boosters may be needed yearly for the most vulnerable

Thu, 2021-06-24 15:41 — mike kraft

EXCLUSIVE WHO estimates COVID-19 boosters needed yearly for most vulnerable The World Health Organization (WHO) forecasts that people most vulnerable to COVID-19, such as the elderly, will need to get an annual vaccine booster to be protected against variants, an internal document seen by Reuters shows. Francesco Guarascio Reuters

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Covid is already deadlier this year, variants are spreading but many in U.S. think the pandemic is over.

Thu, 2021-06-24 14:06 — mike kraft

Covid is already deadlier this year than all of 2020. So why do many in U.S. think the problem’s over? In the global scramble for Covid-19 vaccines, high-income countries, predictably, have sought to secure stocks for their own populations first. Sam Meredith CNBC

As the U.S. pushes ahead with its reopening, easing mask mandates and lifting public health restrictions, much of the rest of the world is seeing an alarming surge in the number of Covid-19 infections and deaths.

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Delta variant expected to make up 90% of new Covid-19 cases in Europe by late August, already 10 % in France

Wed, 2021-06-23 18:10 — mike kraft

Delta variant on track to make up 90% of new Covid-19 cases in Europe by late August The Delta variant is on track to make up 90% of new cases of Covid-19 in the European Union by the end of August, the European Centre for Disease Prevention and Control warned in a threat assessment published Wednesday. By <a href="/profiles/meg-wagner">Meg Wagner</a>, <a href="/profiles/melissa-mahtani">Melissa Mahtani</a>, Melissa Macaya, Mike Hayes and <a href="/profiles/veronica-rocha">Veronica Rocha</a>, CNN CNN

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Doubts raised about Chinese COVID vaccines used in several countries

Wed, 2021-06-23 09:55 — mike kraft

They relied on Chinese COVID vaccines. Now they’re battling outbreaks. Recent infections in Mongolia, Bahrain, Chile and the Seychelles suggest that the Chinese vaccines they use may not be very effective at preventing the spread of the coronavirus, particularly the new variants. The Seattle Times

Mongolia promised its people a “COVID-free summer.” Bahrain said there would be a “return to normal life.” The tiny island nation of the Seychelles aimed to jump-start its economy.

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