SARS-CoV-2 seroprevalence in the city of Puerto Madryn: Underdiagnosis and relevance of children in the pandemic.

Background: Reported cases of COVID-19 may be underestimated due to mild or asymptomatic cases and a low testing rate in the general population.

Research Question: What is the seroprevalence of SARS-CoV-2 infection in the general population and how it compares with the data on SARS-CoV-2 cases reported by a national health surveillance system (SNVS 2.0).

"Super-Spreaders" and Person-to-Person Transmission of Andes Virus in Argentina.

Background: From November 2018 through February 2019, person-to-person transmission of Andes virus (ANDV) hantavirus pulmonary syndrome occurred in Chubut Province, Argentina, and resulted in 34 confirmed infections and 11 deaths. Understanding the genomic, epidemiologic, and clinical characteristics of person-to-person transmission of ANDV is crucial to designing effective interventions.

Methods: Clinical and epidemiologic information was obtained by means of patient report and from public health centers.