PNAS: US confirmed cases of new crown may be underestimated by up to 60%, and as many as 65 million Americans may be infected

Recently, the United States, "National Academy of Sciences" (Proceedings of the National Academy of Sciences, PNAS) published an article from the Department Nicholas Irons (Nicholas J Irons) Statistics University of Washington research team 's research report, the United States reported a new crown pneumonia The number of cases "only accounts for a small part of the total number of infections
.

" The study found that about 60% of infections were missed without being reported

The number of new coronary pneumonia cases reported by the research team in the United States "only accounts for a small percentage of the total number of infections .
" The study found that about 60% of infections were missed without being reported .
But even so, as of early March 2021, only about 20% of Americans have been infected with the virus, indicating that the United States is far from achieving herd immunity .
The number of new coronary pneumonia cases reported in the United States "only accounts for a small percentage of the total number of infections

The co-author of the study and postdoc Nicholas J Irons pointed out that undercounting may “depend on the severity of the pandemic and the amount of testing in each state”
.

Studies have shown that by the spring of 2021, approximately 20% of the US population has been infected with the new coronavirus
.

The research results also show that if large-scale vaccination is not carried out, the United States will not be able to achieve herd immunity in a short period of time.

Even launched a massive vaccination, the United States is unlikely this year or even later, to achieve herd immunity, because highly contagious variant strain has spread in the United States, vaccination slow progress in some states, and 12 years of age children groups Not yet eligible for vaccination
.

Pfizer recently released its 2021 Q2 financial report, which revealed its current work and future developments

Children One of the most noteworthy is for toddlers and school-age children COVID-19 vaccine research, and that can be licensed for this age group a few weeks

On the 26th, the American Medical Association and dozens of doctors and nurse groups issued a joint statement calling for mandatory vaccination of medical staff
.

It is reported that in the medical industry, the vaccination rate of elderly care workers is particularly low, with more than 40% of them not being vaccinated

Former US Department of Public Health Director Jerome Adams (Jerome Adams) said on the 25th that as the number of confirmed cases rose and the vaccination rate stabilized, the US epidemic was “out of control again”
.

"More and more remedial measures will be initiated, whether it is wearing masks or closing business, or children must restart online learning, they will all come

The number of cases in the United States has shown an upward trend again in the past 7 days, especially in areas where the vaccination rate is low, especially in the United States, where children’s infections are relatively serious.
More than 4.
13 million children have been infected with new coronary pneumonia
.

According to a report by CNN on the 28th, the latest report jointly issued by the American Academy of Pediatrics and the Children's Hospital Association showed that the number of new confirmed cases of new coronary pneumonia in children in the United States each week began to rebound in July

Reference materials:

Nicholas J.
Irons ,Adrian E.
 Raftery Nicholas J.
 Irons Nicholas J.
Irons Adrian E.
 Raftery Adrian E.
RafteryProceedings of the National Academy of Sciences Aug 2021,118 (31) e2103272118;  DOI:  10.
1073/pnas.
2103272118DOI:Leave a message here