Importance An overall household secondary attack rate (SAR) of 18.9%(95% CI, 16.2%-
22.0%) through June 17, 2021 was previously reported for SARS-CoV-2. Emerging variants …

As the number of individuals vaccinated against SARS-CoV-2 rises worldwide, population-
level data regarding the vaccines' ability to reduce infection are being generated …

Gizi seimbang pada masa pandemi covid-19 sangat penting bagi pola hidup manusia
karena dengan mengkonsumsi gizi seimbang maka masyarakat dapat menjaga kesehatan …

Coronaviruses are important human and animal pathogens. At the end of 2019, a novel
coronavirus was identified as the cause of a cluster of pneumonia cases in Wuhan, a city in …

Background SARS-CoV-2 in exhaled aerosols is considered an important contributor to the
spread of COVID-19. However, characterizing the size distribution of virus-containing …

Standard contact tracing practice for COVID-19 is to identify persons exposed to an infected
person during the contagious period, assumed to start two days before symptom onset or …

Background Tackling the spread of COVID-19 remains a crucial part of ending the
pandemic. Its highly contagious nature and constant evolution coupled with a relative lack of …

Objectives Overcrowded housing is a sociodemographic variable associated with increased
infection and mortality rates from communicable diseases. It is not well understood if this …

Background Factors that lead to successful SARS-CoV-2 transmission are still not well
described. We investigated the association between a case's viral load and the risk of …

We performed a prospective, cross-sectional study of household contacts of symptomatic
index case-patients with SARS-CoV-2 infection during the shift from Delta-to Omicron …