At what age is SARS-CoV-2 most likely to spread?

People between the ages of 20 and 49 are at risk for SARS-CoV-2 and are also most contagious.

When the Covid-19 pandemic occurred, reports indicated that the disease mainly affected the elderly. In addition, young people are more likely to have mild illnesses.

As recommended by the US Centers for Disease Control and Prevention (CDC), all ages are at risk of Covid-19, especially when the SARS-CoV-2 virus appears more and more new strains such as The current.

However, the CDC survey in the US also found that people under the age of 30 account for more than 20% of Covid-19 cases and are considered to be more capable of transmitting the virus. According to research published in the prestigious American science journal Science Magazine, people between the ages of 20 and 49 are most likely to spread the SARS-CoV-2 virus.

Covid-19 contagious age group

This is the conclusion in a research group of scientists at Imperial College London (UK). They used cell phone data of more than 10 million people to calculate that 65 out of 100 infections originated between the ages of 20 and 49 in the US.

According to the study, people between the ages of 20 and 49 are most responsible for the spread of Covid-19. After schools reopened in some parts of the world since October 2020, this age group accounts for 72.2% of all infections in the United States. Specifically, those aged 20-34 account for 34% and aged 35-49 is 38.2%.

Research shows that only 2.7% of cases are children aged 0-9 and 7.1% of adolescents 10-19 years old.

Due to such high rates of infection, the researchers suggest that focusing on vaccinating this age group could help reduce the spread of the virus.

“This study shows that in places where the highly transmissible SARS-CoV-2 strain is not present, interventions with people aged 20-49, such as mass vaccination with a vaccine, can be controlled. and deterrence from capitalism, ”said Dr. Oliver Ratmann of Imperial College London.

Research also confirms that controlling contagion in this age group will also help reopen safe schools.

Why are young people susceptible to viral infections?

Although it is less likely to be hospitalized or hospitalized because of Covid-19, people in their 20s, 30s and 40s are more likely to become infected with the virus. Some cases develop severe and persistent symptoms, especially in people with obesity, diabetes or high blood pressure.

According to the US CDC, of ​​the more than 3,000 adults (18-34 years old) with Covid-19 hospitalized, 21% required special care, 10% had a ventilator and 2.7%. in the case of capitalism.

Work is one of the reasons young people are susceptible to infection with the SARS-CoV-2 virus. Many in their 20s and 30s work in healthcare, food, and essential services like public transport.

Young people often work in areas at high risk of exposure to the virus, such as bars, restaurants, schools, childcare centers and retail stores. College students can also be affected by outbreaks in school and the spread of the virus when they get home.

In addition, since young people are less likely to develop severe Covid-19, they are often subjective about their safety. Many feel that crowding around, attending parties, not wearing masks and ignoring Covid-19 precautionary guidelines will not pose serious harm to them.

Young people are at risk of spreading the virus to the elderly. Photo: Timesnow.

Young people can infect older groups

The US CDC also said that young people are also more likely to spread the virus to the elderly, more vulnerable.

Usually young people have milder symptoms, so many people do not even know when they were infected. This increases the risk of transmission to the most vulnerable populations, including the elderly and those with underlying diseases.

In some areas of the US, data show an increase in the number of Covid-19 cases among young people. 4-15 days later, the number of the elderly infected with the virus increases. This shows that the risk of transmission of the virus to young people is very high.

Therefore, the CDC recommends that preventive measures of Covid-19 such as wearing a mask, keeping away from body, hand hygiene and self-monitoring of disease symptoms are effective in limiting infection and spreading disease. They are especially important for family members or vulnerable members such as chronic illness, the elderly, and the immunosuppressed.


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