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A link between the combined MMR vaccine (measles, mumps, rubella) and the severity of Covid-19 has been established, according to the review by the American Society of Microbiology mBio which refers to the joint study by American and Turkish scientists.
Scientists have found that Covid-19 patients who were vaccinated in childhood with MMR – against measles, mumps and rubella – have fewer severe symptoms, according to the results of their study which were published in the American Society’s journal. mBio microbiology.
The combined MMR vaccine is a blend of weakened viruses of the three diseases. American scientists and Turkish colleagues have studied the link between the antibodies formed by the MMR vaccine and the characteristic symptoms of Covid-19.
80 people who had Covid-19 participated in the study. They were divided into two groups. On the one hand, the RORII group with 50 people in which antibodies to the MMR vaccine were found. On the other hand, in the control group, 30 who were not inoculated with MMR in childhood and who did not show antibodies after contracting measles, mumps, or rubella.
Scientists found a significant inverse correlation between mumps IgG antibodies and the severity of Covid-19 in patients vaccinated with MMR as children. For asymptomatic patients, these antibodies were 134 to 300 points, for patients with mild symptoms from 75 to 134, moderate symptoms from 32 to 75 points, and finally for those hospitalized and with a ventilator below 32 points. Therefore, the study authors concluded that theoretically the MMR vaccine could protect against complications due to Covid-19.
“It could also explain why the Covid-19-related incidence rate is lower in children than adults, as is the mortality rate. Most children were first vaccinated with MMR between 12 and 15 months and a second time between 4 and 6 years, “says study director Jeffrey Gold.
No connection
At the same time, in the RORII group, the researchers found no link between antibodies to measles or rubella and the severity of Covid-19.
Furthermore, in the control group, there was no correlation between the level of antibodies against measles, mumps and rubella and coronavirus infection.
“This is a first immunological study in which we evaluate the relationship between the MMR vaccine and Covid-19. The statistically significant inverse correlation between mumps antibodies and Covid-19 requires further study. The MMR vaccine is considered safe and has very little effect. If it helps prevent the contamination and spread of Covid-19 and reduce the severity of the disease, then it should be used, “said the press release from the American microbiology society mBio.
According to the scientists, maximum immune protection can be achieved if the vaccine is inoculated twice at least 28 days apart.
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