Two new studies, though from different parts of the world, have arrived at the same conclusion: that young children not only transmit SARS-CoV-2 efficiently, but may be major drivers of the pandemic as well.
The Chicago study examines the concentration of the SARS-CoV-2 in the nasopharynx, or the upper region of the throat that connects to the nasal passages, of children and adults.
According to the results, children 5 years and younger who develop mild to moderate Covid-19 symptoms have 10 to 100 times as much SARS-CoV-2 in the nasopharynx as older children and adults.
Whenever these young children cough, sneeze, or shout, they expel virus-laden droplets from the nasopharynx into the air.
If they have as much as one hundred times the amount of virus in their throat and nasal passages as adults, it only makes sense that they would spread the virus more efficiently.
The researchers found that although young children had a somewhat lower risk of infection than adults and were less likely to become ill, children age 14 and younger transmit the virus more efficiently to other children and adults than adults themselves.
“Although childhood contacts were less likely to become cases,” they wrote, “children were more likely to infect household members.”. »