Was it covid at christmas?  You can get it back now - BNN Bloomberg

Was it covid at christmas? You can get it back now – BNN Bloomberg

(Bloomberg) — As a hidden wave of Covid makes its way across the United States, those who have so far evaded the virus are now getting sick — while others contract Covid for the second, third or even fourth time. To make the epidemic situation more difficult than ever. The rise of at-home testing, which rarely hits official case numbers, has made keeping an accurate count of positive cases impossible. In addition, many US states and jurisdictions now report Covid data only sporadically to the Centers for Disease Control and Prevention. Earlier this week, Washington, D.C. reported case data to the agency for the first time since April, and that’s just as new, more contagious variants of omicron are making their way through the US population, leading not only to a spike for the first time. covid cases but also recurrence of infection. The latest versions of the virus appear to be particularly adept at evading the body’s immune response to both previous Covid infections and vaccines. Studies show that most reinfections go unreported, which gives little insight into how often they occur. All of this makes it particularly difficult to gauge what percentage of the population is currently exposed to Covid – and how the pandemic might develop. “The reality is that things are really not going well right now,” said Jacob Lemieux, an infectious disease physician at Massachusetts General Hospital, speaking at a Harvard Medical School briefing on Covid on Tuesday. Execution postponed after the devastating omicron wave. This was clearly the case until a few weeks ago. “The result is that co-workers are calling in sick, friends posting screenshots of positive Covid tests on social media and school contact tracing programs exploding from exposure alerts, even as official Covid case counts suggest numbers are slowly creeping back in. On Tuesday, The CDC has reported more than 98,000 new cases. The true number is almost certainly higher. “There’s much less visibility of what’s going on,” said Rick Bright, virologist and CEO of the Rockefeller Foundation’s Institute for Epidemic Prevention. Experts say it’s hard to tell. What the next few months will bring.While the vaccines are still working it’s a good job of keeping most people out of the hospital, the virus doesn’t behave the same way it did in the past, and the majority of the country is living as if the pandemic is over.In December and January, during the first wave From omicron infection, case levels rose dramatically before declining about the same speed.This is because the infection circulating at the beginning of the outbreak quickly gave the virus fewer people to infect.Health measures also helped General, such as masking, reduce the spread of disease. This may not be what is happening this time.

“We probably won’t see the same rapid decline of cases that we’ve seen in other eruptions,” said Bob Wachter, MD, chief of medicine at the University of California, San Francisco. Most likely, but also shortening the period during which a previous infection provides protection from the virus. There was hope that hundreds of thousands of omicron infections last winter would help boost the population’s immunity and protect against future increases in the coming months. According to data from the Centers for Disease Control and Prevention, about a third of the country had contracted COVID-19 before the Omicron wave, a number that has since risen to more than half. But how effective those antibodies are now depends on which type a person gets.

For example, delta immunity doesn’t hold up well against other variants, according to a study recently published in Nature. There is now evidence that some omicron variants can even evade the immune defenses provided by the omicron variants that came before them. One recent study published as a preliminary publication by researchers in Beijing found that several sub-variants of omicron – BA.2.12.1, BA.4 and BA.5 – can bypass immune defenses from infection with another version of omicron, BA.1 .

All of these factors mean that large segments of the population that were once protected from infection may now be at risk, and there are plenty of data gaps to be able to accurately judge the state of the epidemic. It’s not clear how often infections occur or what variants people get back in. The Centers for Disease Control and Prevention’s last update on re-infection was in January. The agency has not indicated whether it tracks cases and does not make such data available to the public, however, a few state health departments have taken it upon themselves to monitor recurring cases seriously. This data suggests that re-infections are now occurring more frequently, the Colorado Department of Health, for example, has recorded more than 44,000 reinfections during the pandemic — 82% of which have occurred since O’Micron became the dominant variant in December. Re-infections are more common among the unvaccinated, but more than a third have occurred in people who have completed the initial two-dose series of vaccinations, according to the data. More than 16% of re-infections in Colorado have been to people who had at least one booster dose, and data from the North Carolina Department of Health and Human Services shows that re-infections in the state have been on the rise since late March. Re-infections currently make up 8% of the state’s total infections for the week ending April 30. Recurring infections have also increased in Indiana, according to the data, where they account for more than 12% of total cases, and in Idaho, where they accounted for 18.5% of cases in the first quarter of 2022, and a Washington state report published on Wednesday shows that some cases of recurrence The infection also leads to hospitalization. Data show that the most likely age group to be infected is 18 to 34 years old, but people 65 or older are most likely to be hospitalized after reinfection. “Really keen and doing everything right, it wouldn’t be surprising if they end up with Covid,” said Wachter, of the University of California, San Francisco. “We are undoubtedly increasing.”

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2022-05-13 09:48:36

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