Today to focus on the epidemic with you. Mainly the latest reports related to the United States!

According to the Harvard Kennedy School of Government website, a large national survey that has periodically measured the status of new coronavirus infections in the U.S. public since the start of the pandemic found that about half of U.S. adults said they were infected with COVID-19 at some point, which is much more than the number who reported testing positive.

Since April 2020, the Covid 50 States Project, a group of scholars from five U.S. universities, has been surveying people in all 50 states and Washington, D.C., almost monthly.

The latest report, "The State of the COVID-19 Pandemic," is based on the latest survey of more than 26,000 people conducted in October and November of this year. This is the 96th report released by the academic team since the project's inception. Each report was written based on a survey of more than 20,000 participants.

This latest report is a bit of a departure from previous reports in that the researchers seem to have intentionally taken a step backward to outline the attitudes and behaviors of Americans toward COVID-19 since the early 2020s, from self-testing to vaccination and mask wearing.

Among the core findings laid out in this report: while about half of Americans say they are infected with the new coronavirus, slightly more than a third say they have tested positive for the virus, and many self-tests are not reported.

The study says that "official data currently miss about 48 percent of known COVID cases in the past three months."

The new report, authored by faculty at the Harvard Kennedy School, Harvard Medical School, Northeastern University, Northwestern University and Rutgers University, says at least five in six U.S. adults may already have some immunity, either through vaccination or through previous infection.

The report's summary lists 10 major points.

1. About half of the U.S. adults surveyed said they had been infected with COVID-19 at some point, and 35 percent of them said they had tested positive for COVID-19 previously.

2. Those who received the COVID-19 vaccine reported fewer days of illness than those who did not receive the vaccine.

3. A large number of positive cases were missed in the reported test data due to under-reporting of the use of rapid home testing.

4. At least 5 in 6 U.S. adults may have some level of immunity to COVID-19 through vaccination or prior infection.

5, The vast majority of U.S. adults had not received a bivalent booster shot, but most did not indicate that they planned or were willing to receive the shot.

6, Antiviral drugs are not being used heavily, even among high-risk U.S. adults.

7, One in nine U.S. adults reported continued symptoms of COVID-19 for more than two months after infection.

8. Nearly half of U.S. adults still wear a mask, but only a quarter say they strongly comply with the recommendation to wear a mask when out and about.

9, Only 28% of U.S. adults have received the flu vaccine.

10. There is a strong correlation between getting a bivalent booster and getting the flu vaccine. However, only one in ten U.S. adults has received both vaccines.