According to a new study, COVID-19 immunity can last up to 7 months after infection.

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A study published Friday in Nature Communications discovered that people infected with COVID-19 continue to produce antibodies against the virus for up to seven months.

The data revealed that in some cases, levels of antibodies, or cells produced by the immune system to fight infections, may actually increase over the course of seven months.

Furthermore, pre-existing antibodies against common cold coronaviruses may help protect against COVID-19, according to the researchers.

“Cross-protection by pre-existing immunity to common cold coronaviruses remains to be confirmed,” study co-author Carlota Dobaño said in a press release.

The majority of infections among healthcare workers in the study occurred during the first pandemic wave, with the percentage of participants with COVID-19 antibodies increasing to 16 percent in October from just under 14 percent in March, according to the data.

Those who had antibodies had “stable” levels over the course of the study, implying that they continued to produce antibodies long after their initial infections, according to the researchers.

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According to Gemma Moncunill, a study co-author and Dobao’s colleague, approximately 75% of the study participants with antibodies at seven months saw an increase in their levels of immune cells “from month five onwards, without any evidence of re-exposure to the virus.”

According to the data, the majority of infections among healthcare workers in the study occurred during the first pandemic wave, with the percentage of participants with COVID-19 antibodies increasing to 16% in October from just under 14% in March.

Those who had antibodies had “stable” levels throughout the study period, indicating that they continued to produce antibodies long after their initial infections, according to the researchers.

According to Gemma Moncunill, a study co-author and Dobao’s colleague, approximately 75% of the study participants with antibodies at seven months actually saw an increase in their levels of the immune cells “from month five onwards, without any evidence of re-exposure to the virus.”

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According to the researchers, there were no cases of COVID-19 reinfections among study participants.

Participants infected with COVID-19, on the other hand, had lower levels of human cold coronavirus antibodies, particularly those who were asymptomatic, according to the researchers.

Estimates of how long those infected with the coronavirus remain immune to possible reinfection have ranged from three to nine months since the outbreak began.

 

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