According to a new report from the Centers for Disease Control and Prevention (CDC), outbreaks of colds may become more common as schools reopen for personal learning.
In the report recently published in Emerging Infectious Diseases, the journal of the CDC, researchers looked at the reopening of schools in Hong Kong as an indication of what could happen in the US if students move away from distance education. In Hong Kong, schools will be open again from the end of January-May 2020 due to COVID-19. They reopened briefly, but closed again in July amid an increase in cases.
When schools and childcare centers reopened in October, cases of colds among children increased – despite the mandatory use of face masks and other measures to limit the spread of COVD-19.
The researchers suspect that the children were more susceptible to rhinitis causing colds, once again learning personally because they spent most of the year away from others outside their household, which increased the number of chances they had to be exposed. , has decreased. for rhinoviruses and eventually build up immunity.
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“A large number of cold outbreaks in Hong Kong schools and childcare centers during October – November 2020 led to school dismissal throughout the area,” they wrote in the report. “Increased susceptibility to rhinoviruses during prolonged school closures and dismissal due to coronavirus disease and varying efficacy of non-pharmaceutical interventions may have increased the transmission of cold viruses after school attendance resumed.”
The outbreak – according to the CDC – occurred 482 between October 25 and November 28, occurred mainly in primary schools, kindergartens, kindergartens and kindergartens.
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‘The population’s susceptibility to rhinoviruses and other respiratory viruses, including influenza viruses, increased over time as individuals were likely to be less exposed to the viruses when intensive social distance measures, including school dismissal, were implemented in response to the COVID-19 pandemic. This would have increased the transfer potential when schools were resumed, ‘the authors of the report write, noting that schools in England experienced a similar incidence. Two weeks after schools reopened in full, a significant increase in the detection of rhinoviruses in adults was recorded, possibly driven by transmission among children. ‘
Researchers do not know why colds occur, despite the wide range of infection control measures that take place when children return to school.
“Although transmission modes may generally be similar for different respiratory viruses, the extent to which each mode contributes to the transmission of a particular virus remains unclear. Therefore, the efficacy of certain non-pharmaceutical interventions may differ between viruses,” they hypothesized. “For example, face masks have been shown to be effective in blocking the release of coronaviruses and influenza viruses, but not rhinoviruses.
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They also noted that rhinoviruses are more resistant to certain disinfectants than coronaviruses and influenza viruses, which can also help explain the outbreaks.
“Our findings highlight the increased risk posed by cold viruses in places where schools were closed or discharged for long periods during the COVID-19 pandemic.”