WINNIPEG A Winnipeg mom says her family is at home isolating after her 9-year-old son tested positive for COVID-19. An outbreak has since been declared at the boy’s school and students have transitioned to remote learning. “He’s bounced back pretty quick, so we’re really thankful for that,” said Sarah Carroll. “The scary part is kind of seeming to be over.” As cases climb in schools, questions continue to surface about the safety of in-person classes. Carroll’s son is a grade 3 student at École Marie-Anne-Gaboury. Last Wednesday he woke up with a fever and later tested positive for the disease.
Surge in COVID-19 cases increases severe infection risk for children, health experts say
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Children less likely to spread SARS-CoV-2 than adults
A study conducted by researchers in Canada suggests that children may be less likely than adults to spread the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that causes coronavirus disease 2019 (COVID-19).
As recently reported in
The Canadian Medical Association Journal (CMAJ), the study found that samples taken from 175 children aged 17 years or younger were about half as likely to contain culturable viruses than samples taken from adults.
Furthermore, when SARS-CoV-2 was successfully cultured, a significantly less viable virus was present in samples from children than from adults.
The team from Cadham Provincial Laboratory in Winnipeg, Manitoba, says the findings suggest that children do not appear to be the main drivers of SARS-CoV-2 transmission, which has important public health and clinical implications.
Pfizer COVID vaccine shows varied effect against variants, study suggests
One dose of the Pfizer/BioNTech COVID-19 vaccine appears to be not very protective against the B117 variant, and two doses may not be as effective against the B1351 variant, according to a non–peer-reviewed, real-world Israeli study posted late last week on the medRxiv preprint server.
Led by researchers at Tel Aviv University, the case-control study compared nearly 400 people who had received one or two doses of the Pfizer vaccine and were infected by SARS-CoV-2 with matched unvaccinated, infected controls.
Vaccinated participants were infected either at least 1 week after their second dose or between at least 2 weeks after the first dose and before 1 week after the second one. Overall, most infections involved B117, which was first identified in the United Kingdom.
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