With the daily stream of new information, it is difficult to keep up with data on how the coronavirus epidemic affects children and school attendance, as well as how pediatricians can advise parents. The following is a summary of recently published information about birth and infant outcomes, and symptoms seen in infants and children, along with a review of recent information on transmission in schools.
Dr. Basco
COVID-19 in newborns
In November 2020, the Centers for Disease Control and Prevention published data from 16 jurisdictions detailing pregnancy and infant outcomes of more than 5,000 women with SARS-CoV-2 infection. The data were collected from March to October 2020. More than 80% of the women found to be positive for SARS-CoV-2 were identified during their third trimester. The surveillance found that 12.9% of infants born to infected mothers were born preterm, compared with an expected rate in the population of approximately 10%, suggesting that third-trimester infection may be associated with an increase in premature birth. Among 610 infants born to infected mothers and tested for SARS-CoV-2 during their nursery stay, 2.6% were positive. The infant positivity rate was as high as 4.3% among infants who were born to women with a documented SARS-CoV-2 infection within 2 weeks of the delivery date. No newborn infections were found among the infants whose mothers’ infection occurred more than 14 days before delivery. Current CDC and American Academy of Pediatrics recommendations are to test infants born to mothers with suspected or confirmed SARS-CoV-2 infection.
Data on clinical characteristics of a series of hospitalized infants in Montreal was published in December 2020. The study identified infants 0-12 months old who were diagnosed or treated at a single Montreal hospital from February until May 2020. In all, 25 (2.0%) of 1,165 infants were confirmed to have SARS-CoV-2, and approximately 8 of those were hospitalized; 85% had gastrointestinal symptoms and 81% had a fever. Upper respiratory tract symptoms were present in 59%, and none of the hospitalized infants required supplemental oxygen. The data overall support the idea that infants are generally only mildly symptomatic when infected, and respiratory symptoms do not appear to be the most prevalent finding.
COVID-19 in children
The lack of prominent respiratory symptoms among children with SARS-CoV-2 infection symptoms was echoed in another study that evaluated more than 2,400 children in Alberta, Canada. Among the 1,987 children who tested positive for SARS-CoV-2, one-third (35.9%) were asymptomatic. Some symptoms were not helpful in differentiating children who tested positive vs. those who tested negative. The frequency of muscle or joint pain, myalgia, malaise, and respiratory symptoms such as nasal congestion, difficulty breathing, and sore throat was indistinguishable between the SARS-CoV-2–infected and –noninfected children. However, anosmia was much more prevalent (7.7%) among those who tested positive for SARS-CoV-2, compared with 1.1% of those who were negative. Headache was present in 15.7% of those who were positive vs. 6.3% of those who were negative. Fever was slightly more prevalent, at 25.5% among the positive patients and 15% of the negative patients.