Double Covid-19, a man in the US develops ‘more severe’ symptoms, a case that raises questions about immunity

• March 25 – First wave symptoms, including sore throat, cough, headache, nausea and diarrhea
• April 18 – He tests positive for the first time
• April 27 – Initial symptoms were completely healed
• May 9 and 26 – Twice negative
• May 28 – She has symptoms again, this time including fever, headache, dizziness, cough, nausea and diarrhea
• June 5 – Test positive for the second time, and hypoxia (low blood oxygen) with shortness of breath

—

Scientists say the patient caught the coronavirus twice, and not that the initial infection became inactive and then re-developed.

–

A comparison of the viral genetic code taken during each symptom attack shows that the codes are too different to be caused by the same infection.

–

“Our findings suggest that previous infections may not necessarily protect against future infections,” said Dr Mark Pandori, of the University of Nevada.

–

“The possibility of reinfection could have significant implications for our understanding of immunity to Covid-19.”

–

He said even recovered people should continue to follow guidelines around social distancing, face masks and hand washing.

–

—

–

—

–

Scientists are still struggling with the strange problem between the corona virus and immunity.

–

Has everyone become immune? Even people with very mild symptoms? How long will the protection last?

–

These are important questions for understanding how the virus will affect us in the long term and may have implications for vaccines and ideas like herd immunity.

–

So far, reinfection appears to be rare – there are only a few examples of the more than 37 million confirmed cases.

–

Reports in Hong Kong, Belgium and the Netherlands say they are no more serious than the former. One case in Ecuador reflects a more severe US case, but does not require hospital care.

–

However, this is still the initial period of the pandemic’s early days, and records of previous cases of coronavirus indicate that protection is expected to diminish.

–

As countries experience a second wave of the virus, we may start to get clearer answers.

–

—

–

It was previously assumed that the second wave of Covid-19 infections would be lighter, as the body has learned to fight the virus for the first time.

–

It remains unclear why the patient from Nevada became seriously ill the second time around. One idea is that he may have been exposed to larger doses of the virus.

–

It is still possible that early immunity exacerbated the second infection. This has been documented with diseases such as dengue fever, in which antibodies created in response to one strain of dengue virus cause problems if infected by another.

–

Paul Hunter, of the University of East Anglia, said the study was “very concerning” because of the small time gap between the two infections, as well as the severity of the second infection.

–

“Given the fact that to date more than 37 million people have been infected, we hope to hear of more incidents if very early reinfection with severe disease is common.

–

“It is too early to say with certainty what the implications of these findings are for any immunization program. But these findings reinforce the point that we still don’t know enough about the immune response to this infection.”

—

Related posts:

Psychologists save 10% in health costs

what is the new strain of Covid-19 and what are its symptoms

Japan investigates a third death of a vaccinated with the contaminated batch from Spain

Is it dangerous to have sex with a partner who has a yeast infection in the vagina?