Man shatters COVID-19 infection record, gets Virus Twice With Second Hit ‘More Severe’


A man in the United States has caught Covid twice, with the second infection becoming far more dangerous than the first, doctors report.

The 25-year-old needed hospital treatment after his lungs could not get enough oxygen into his body, reports the BBC.

Reinfections remain rare and he has now recovered.
But the study in the Lancet Infectious Diseases, raises questions about how much immunity can be built up to the virus.

The man from Nevada had no known health problems or immune defects that would make him particularly vulnerable to Covid.

Scientists say the patient caught coronavirus twice, rather than the original infection becoming dormant and then bouncing back. A comparison of the genetic codes of the virus taken during each bout of symptoms showed they were too distinct to be caused by the same infection.

“Our findings signal that a previous infection may not necessarily protect against future infection,” said Dr Mark Pandori, from the University of Nevada.

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

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

It had been assumed that a second round of Covid would be milder, as the body would have learned to fight the virus the first time around.

It is still unclear why the Nevada patient become more severely ill the second time. One idea is he may have been exposed to a bigger initial dose of the virus.

It also remains possible that the initial immune response made the second infection worse.

This has been documented with diseases like dengue fever, where antibodies made in response to one strain of dengue virus cause problems if infected by another strain.

What happened when

*25 March – First wave of symptoms, including sore throat, cough, headache, nausea and diarrhoea

*18 April – He tests positive for the first time

*27 April – Initial symptoms fully resolve
*9 and 26 May – He tests negative for the virus on two occasions

*28 May – He develops symptoms again, this time including fever, headache, dizziness, cough, nausea and diarrhoea

*5 June – He tests positive for the second time, and is hypoxic (low blood oxygen) with shortness of breath

Related posts

Leave a Comment