A study claims that the SARS-CoV-2 virus remains in the blood for more than a year
Two recent studies provide new information about how the SARS-CoV-2 virus interacts with our body. An American study identified the virus in the blood of patients 14 months after infection. At the same time, Italian scientists claim that our immune system is able to recognize new variants of the virus.
A single contamination is enough, and the virus that causes the Covid infection remains in our blood for more than a year, according to ScienceDaily. The discovery was made public by researchers from the University of California San Francisco.
From another research, this time Italian, comes a second discovery: thanks to its memory, our immune system is able to recognize new variants of the virus.
The SARS-CoV-2 virus remains in the blood for even two years
At the beginning of the pandemic, the disease was thought to be transient. But a growing number of patients, even those who were previously healthy, continued to have symptoms such as mental confusion, digestive and vascular problems for months or even years.
To assess the situation, the researchers examined blood samples from 171 patients infected with the SARS-CoV-2 virus. Using an ultrasensitive test for the Spike protein, they found that it was still present even 14 months later in some people. Moreover, it was found that, among those who arrived at the hospital because of Covid, the probability of detecting viral antigens was double.
Immune system is able to recognize new SARS-CoV2 variants
At the same time, a team of scientists from the San Raffaele Hospital in Milan reached a second result, which opens new frontiers in the fight against the virus. The research, carried out on experimental models, established that, thanks to its memory, the immune system is able to recognize new variants of SARS-CoV2. T lymphocytes activated by previous vaccination or infection play an important role in this recognition.
Further studies are needed to determine the impact of viral persistence and to develop effective treatments for long Covid.
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2024-03-16 14:36:19
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