Was there a COVID at Christmas? Now you can get it back

As the secret wave of COVID-19 travels through the United States, those fleeing the virus are now getting sick, while others are catching COVID-19 for the second, third or fourth time.

Several factors have made monitoring the pandemic even more difficult. The proliferation of home-based tests has made it an official figure in rare cases, making it impossible to keep accurate records of positive performance. In addition, many U.S. states and jurisdictions now only occasionally report COVID-19 data to Centers for Disease Control and Prevention. Earlier this week, Washington, Columbia County reported the case to the agency for the first time since April.

This was as new, infectious subvariants of omicron passed through the U.S. population, leading not only to an increase in COVID-19 cases for the first time, but also to a recurrence.

Recent versions of the virus appear to be particularly effective in preventing the body’s immune response to previous COVID-19 infections and vaccines. Studies show that most cases of infection are not reported, which gives little information about how common they are.

All of this makes it particularly difficult to determine what percentage of the population is currently vulnerable to COVID-19 and how the pandemic will develop.

“The truth is, things aren’t going well right now,” Jacob Lemie, an infectious disease doctor at Massachusetts General Hospital, told a Harvard Medical School COVID-19 briefing on Tuesday. “We all thought we should rest after the devastating Omir wave. That was obvious a few weeks ago. ”

As a result, colleagues are calling to say they are sick, friends are posting pictures of positive COVID-19 tests on social media, and school contact search programs show that the official number of COVID-19 cases is spreading in numbers. Gradually back up.

On Tuesday, the CDC reported more than 98,000 new cases. The real number is almost certainly higher. Rick Bright, a virologist and director general at the Rockefeller Foundation’s Institute for Pandemic Prevention, said, “It’s less likely to see what’s happening.”

Experts say it is difficult to know what the next few months will bring. Although vaccines are still doing a good job of preventing most people from being hospitalized, the virus is not as prevalent and much of the country is living as if the pandemic was over.

In December and January, during the first wave of omicron infections, the incidence of the disease dropped almost rapidly. This is because the spread of infections at the beginning of the epidemic has reduced the number of people infected in a short period of time. Public health measures such as masking have also helped reduce the spread.

This may not be the case this time.

Bob Wachter, head of medicine at the University of California, San Francisco, said: “We may not see a rapid decline in what we see in other waves.”

Preliminary evidence suggests that omicron not only reverses COVID-19 infection, but also reduces the window that provides protection against the previous infection virus.

Hundreds of thousands of omicron infections last winter were expected to help boost the population’s immunity and protect them from future uprisings in the coming months. According to the CDC, one-third of the country has caught COVID-19 before the omicron wave, a figure that has since more than halved. However, the effectiveness of these antibodies depends on the type of person.

According to a recent study published in the journal Nature, for example, Delta immunity is not resistant to other options. However, there is now evidence that some omicron subvariants can escape the immune defenses provided by the omicron variants that preceded them. One recent study, published as a preliminary publication by researchers in Beijing, showed that several omicron subvariants – BA.2.12.1, BA.4 and BA.5 – are different versions of omicron, which can cross the immune defenses against infection with BA.1.

All of these factors mean that a large portion of the population that was once protected from infection may now be vulnerable.

It is not known how often infections occur or what options people re-infect. The CDC’s last update on infections was in January. The agency has not said whether it is monitoring the case or not, and has not released such information to the public.

However, a number of state health departments have begun to closely monitor recurrences. These data indicate that reinfections are common.

For example, the Colorado Department of Health registered more than 44,000 reinfections during a pandemic – 82% of which occurred since the micron-dominated option in December. Reinfections are more common among those who have not been vaccinated, but more than a third have been reported in people who have completed the first two doses of the vaccine. More than 16% of re-infections in Colorado occurred in people with at least one booster dose.

Data from the North Carolina Department of Health and Human Services shows that the state has seen an increase in re-infections since late March. In the week ending April 30, infections account for 8 percent of the state’s total infections.

Recurrent infections are reported to be on the rise in Indiana, accounting for more than 12% of all cases, and 18.5% in Idaho in the first quarter of 2022.

A report released by the state of Washington on Wednesday showed some of the reinfections were also hospitalized. The risk of re-infection was reported to be 18 to 34 years, but 65 and older were hospitalized after re-infection.

Wachter of the University of California, San Francisco, said: “It’s not surprising that for the first time in two years, someone gets COVID-19, even if they’re really careful and do everything right.” “We’re definitely on the wave.”

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