Many who tested positive for COVID-19 in two studies showed no symptoms

Two coronavirus studies released on Friday-one from about 2,000 from Florida and another from a nursing home in Washington-reached the same conclusion. Symptoms.

The findings add to the growing body of evidence suggesting that undisturbed people contribute to the spread of the deadly virus that is sweeping the world.

Pandemic Lost at least 50,890 people in the United StatesAccording to the aggregates collected by, Johns Hopkins University.

Was the Covid-19 case underestimated at Miami Dade?

Miami Dade County and the University of Miami School of Medicine conducted a randomized antibody test study of 2.75 million residents in the county, with approximately 1,800 participants, Miami Mayor Carlos Guimenez said at a news conference on Friday.

According to Jimenez, the data show that 6% of the study populations are positive for the Covid-19 antibody, which estimates approximately 165,000 residents.

By comparison, the Florida Department of Health says 10,701 people tested positive in Miami-Dade County.

This means that the actual number of Covid-19 cases in Miami Dade County is about 16.5 times the number reported by the state.

Jimenez said this seems to mean that a significant number of his voters were carrying the virus while they were asymptomatic. He stressed that imposing a social distance requirement was effective.

As a result, Jimenez said the resumption strategy would require strict rules regarding social distance from enforcement by police.

“Identifying the number of asymptomatic individuals is very important to public health,” said Jimenez. “As I said before, they are the people who can pass the virus to the most vulnerable people.”

According to Jimenez, researchers in the study are 95% confident that the true number of patients infected in Miami-Dade County is 4.4% to 7.9%, or 123,000 to 221,000.

According to Jimenez, the data show that African-American and Caribbean communities are twice as likely to get Covid-19 as other racial groups.

In a nursing home, one in four people infected will die

The Washington study was conducted by researchers from the US Centers for Disease Control and Prevention and the Department of Health in Washington and Seattle-King County.

Nursing homes were not identified in this study, so it’s unclear if the researchers investigated Life care center In Kirkland, the first epicenter of the coronavirus. At least 35 deaths from coronavirus Associated with facility, According to the people involved. The virus has infected two-thirds of the population and dozens of staff.

In a study published Friday, more than half of the residents of nursing homes were asymptomatic and coronavirus-positive.

“Infection from asymptomatic residents with (coronavirus) was most likely responsible for the rapid and widespread spread of infection to other residents and staff,” the researchers say. New England Medical Journal.

Only three weeks after the first case of a nursing home was identified, researchers said 64% of residents were infected with the virus. One in four people in the affected population died.

Of the people who tested positive, 56% were sick at the time, the researchers said. But research shows that most of them later developed symptoms. In other words, it meant that I had symptoms when I was tested.

Most coronavirus tests look for fragments of genetic material from the virus. Therefore, a positive test is not necessarily infected.

However, in this study, researchers found that more than two-thirds of people released live infectious virus if they were positive before they showed symptoms.

Researchers have warned that their research was conducted in nursing homes, which means that it cannot necessarily be generalized to the general public.

Still, research says it supports the use of face masks when people are in crowded areas. Explanation published in NEJM By virologist Diane Haver and colleagues at the University of California, San Francisco.

It also means that asymptomatic people may need to be tested in so-called collective living situations such as nursing homes, prisons and homeless shelters.

“To implement this strategy, we need to quickly upgrade our current US testing capabilities,” they said. “This unprecedented pandemic requires unprecedented action to achieve its final defeat.”

Two other studies from Boston and Iceland

Other studies have found that many people have or do not know the coronavirus, and asymptomatic people help spread the virus.

Outbreak at a homeless shelter in Boston Authorities urged more testing. Of the 146 positive cases, all were considered asymptomatic, the study found.

Study in Santa Clara County, California Estimated 2.49% to 4.16% of people The country had been infected with Covid-19 by 1 April. This is equivalent to 48,000-81,000 people, 50-85 times as many as the county authorities have recorded by that date, with 956 confirmed cases.

In IcelandAccording to the founder of the testing company, less than 1% of the tests tested positive for the virus. However, about 50% of those who test positive say they are asymptomatic.