The Effect of the COVID-19 Pandemic on Pediatric Respiratory Hospitalizations.

BACKGROUND: During coronavirus disease 2019 (COVID-19) pandemic, less isolation of common winter viruses was reported in the southern hemisphere. OBJECTIVES: To evaluate annual trends in respiratory disease-related admissions in a large Israeli hospital during and before the pandemic. METHODS: A retrospective analysis of medical records from November 2020 to January 2021 (winter season) was conducted and compared to the same period in two previous years. Data included number of admissions, epidemiological and clinical presentation, and isolation of respiratory pathogens. RESULTS: There were 1488 respiratory hospitalizations (58% males): 632 in 2018-2019, 701 in 2019-2020, and 155 in 2020-2021. Daily admissions decreased significantly from a median value of 6 (interquartile range [IQR] 4-9) and 7 per day (IQR 6-10) for 2018-2019 and 2019-2020, respectively, to only 1 per day (IQR 1-3) in 2020-2021 (P-value < 0.001). The incidence of all respiratory viruses decreased significantly during the COVID-19 pandemic, with no hospitalizations due to influenza and only one with respiratory syncytial virus. There was also a significant decline in respiratory viral and bacterial co-infections during the pandemic (P-value < 0.001). CONCLUSIONS: There was a significant decline in pediatric respiratory admission rates during the COVID-19 pandemic. Possible etiologies include epidemiological factors such as mask wearing and social distancing, in addition to biological factors such as viral interference. A herd protection effect of adults and older children wearing masks may also have had an impact.

Safety of Cidofovir Treatment for Suspected or Confirmed Adenovirus Infection in Immunocompetent Pediatric Population.

BACKGROUND: Cidofovir (CDV), a nucleoside phosphonate analogue, exhibits activity against severe cytomegalovirus and adenoviral (ADV) infection. Nevertheless, reports of elevated nephrotoxicity rates limited its use to highly vulnerable cases, mainly immunocompromised children with fulminant infection. Limited data exists regarding CDV safety in immunocompetent children. OBJECTIVE: To evaluate CDV-related toxicity, mainly nephrotoxicity, in immunocompetent children with severe ADV/cytomegalovirus infection. METHODS: We conducted a retrospective review of medical records for all immunocompetent children under 18 years of age treated with intravenous CDV from January 2005 to December 2019. RESULTS: Among the 23 patients identified, 21 were diagnosed with severe ADV infection. Median age was 15 months. Twenty-one (91%) children were admitted to the pediatric intensive care unit. Eighteen patients (78%) received standard CDV protocol (5 mg/kg CDV weekly for 2 weeks), 4 (17%) according to nephroprotective low-dose protocol and 1 patient transitioned. The median duration of CDV treatment was 14 days (range: 1-21 days). All patients received hyperhydration and probenecid with each infusion. Acute kidney injury was recorded in 1 patient (with concurrent septic shock) during CDV treatment. Two children exhibited acute kidney injury before CDV initiation, but renal function normalized during CDV treatment. One patient developed transient neutropenia (600 cells/L), apparently as a result of sepsis. No other major adverse effects were noted. Mortality rate was 3/23 (13%), unrelated to CDV toxicity. CONCLUSIONS: Our findings suggest that CDV-related nephrotoxicity rate in immunocompetent children may be lower than previously reported, perhaps lower than in the severely immunocompromised population.