Here is how long COVID immunity may last

Henrietta Strickland
October 17, 2020

An Indian-origin researcher in the USA has claimed that immunity against coronavirus might persist for up to seven months after being infected with the virus.

Researchers at the University of Arizona Health Sciences conducted the study with help from almost 6,000 participants.

Hopes for a rapid vaccine rollout recently suffered a setback as U.S. pharmaceutical firm Eli Lilly said on Tuesday it had suspended the phase three trial of its antibody treatment over an unspecified incident, the second in less than 24 hours after Johnson & Johnson ran into a similar problem.

On Thursday, the USA reported more than 63,000 new COVID-19 cases, which was the highest one-day total since the end of July, The Washington Post reported.

"A significant concern for the upcoming winter months is the unpredictable effects of co-circulation of SARS-CoV-2 with other seasonal respiratory viruses; we have shown that our assay can reliably distinguish between different viruses in clinical samples, a development that offers a crucial advantage in the next phase of the pandemic", said Dr. Nicole Robb, formerly a Royal Society Fellow at the University of Oxford and now at Warwick Medical School. In addition, he said, "We used this study to investigate that question and found immunity is stable for at least five months".

Also Read | Puducherry Reports 246 New COVID-19 Cases Today, Total Tally in UT Rises to 32,245: Live Breaking News Headlines & Coronavirus Updates on October 14, 2020. After the research was conducted, Bhattacharya and the co-author Professor Janko Nikolich-Zugich from UArizona also said that antibodies appear in blood tests within 14 days of infection.

The second stage of the immune response is the creation of long-lived plasma cells, which produce high-quality antibodies that provide lasting immunity, according to the researchers.

Physicists at the university said the method uses artificial intelligence software to tell positive tests of SARS-CoV-2, the novel coronavirus that causes COVID-19, from negative samples with a high degree of accuracy.

"Whether antibodies provide lasting protection against SARS-CoV-2 has been one of the most hard questions to answer", said UArizona Health Sciences Senior Vice President Michael D Dake. But they believe that the immunity lasts much longer than that.

Previous studies done suggested that antibody levels drop quickly after infection, providing only short-term immunity. As per the researcher, the SARS infected people-a virus from the same Coronavirus family-are still seeing immunity 17 years after infection.

Other reports by Click Lancashire

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