Studies suggest the first new coronary case in the United States may date back to December last year

On January 20, the first case of the new coronavirus in the United States was confirmed in Snohomish County, Washington. On February 26, the first case of COVID-19 deaths in the United States occurred in the same state. Since then, we learn edgtos, the first death actually occurred nearly three weeks ago in Santa Clara County, California, when a woman who did not know she was infected with COVID-19 died of complications. Now, a new study says authorities in Snohomish suspect that the first new coronavirus patients in the region may have been in the region as early as late December 2019, but were not diagnosed at the time.

Studies suggest the first new coronary case in the United States may date back to December last year

At least two people tested positive for the COVID-19 antibody, which can only detect highly contagious diseases in blood tests if it survives. Authorities could not determine whether the two men contracted COVID-19 in December. Still, the new data are certainly consistent with similar findings in Europe and with the evolution of COVID-19 in Washington state.

Even so, finding “patient zero” who brings the virus to the United States may be problematic, and more likely multiple “zero patients” are spreading COVID-19 around the world at the same time.

Jean, a 64-year-old nurse from Snohomish County, developed a cold-like condition two days after Christmas. Symptoms included “dry cough, cough, fever, body pain, and finally, a problem with her lungs.” The symptoms worsened for about a week and she went to see a doctor twice. She had X-rays and received treatment, including a nebulizer device commonly used to treat asthma. It wasn’t until a few months later that her blood tested positive for COVID-19, indicating that she had been infected before.

“When I was sick, I didn’t even know what COVID-19 was,” Jean told the Seattle Times. “I haven’t been sick anyother time,” Jean said. “If I hadn’t been infected with the virus, I couldn’t have imagined when I would have been infected with it. “

Because Jean’s symptoms may also be a sign of the common cold, it is not possible to say that she contracted COVID-19 in December. In addition, there is no immediate outbreak of COVID-19 in the area can not be explained. Local health authorities told the Seattle Times that a second case of antibody-positive in December was found, but gave no further details.

Jean’s condition worsened on January 4th, when doctors discovered that her lungs were overfilled and she was treated for asthma. The report features an X-ray of what is likely to be Jean, with this on it.

According to the doctor’s explanation, an X-ray taken in January of the lungs of a Snohomish County resident found that the lungs were “over-expanded” and “linearly opaque…. Suggests an overlay of lung infections in the upper respiratory tract.” The patient was later tested positive for COVID-19 antibodies.

If these patients were infected with COVID-19 in late December, they must have been infected at some point in the previous two weeks. This will push Jean’s infection date to mid-December. However, it is unclear where she contracted the infection. Jean says she rarely goes out in the weeks leading up to her illness.

Researchers from northern France began in mid-November and found that X-rays of two patients were consistent with the COVID-19 infection. Earlier, researchers in Paris found samples on December 27th from a patient who developed flu-like symptoms on December 27th and found him infected with a new coronavirus. Doctors in Italy said they found evidence of COVID-19 cases in the country in January, weeks before the first confirmed cases. They speculated that they might have had cases before then.

In addition, Snohomish was the region where the first confirmed case was registered and the first death occurred. It was also the first area where COVID-19 community transmission was detected on 24 February. When an infectious disease enters the community-transmitted phase, epidemiologists cannot tell where the patient is infected. This makes it more difficult to control the virus.