NEJM's newest on Covid 19

CONCLUSIONS AND RELEVANCE: In this study using a sequential surveillance design, there was no association between RSVpreF vaccination during pregnancy and preterm birth; however, potential increased risks of pregnancy-associated hypertensive

CONCLUSIONS: Using screen devices while eating is associated with higher dietary intake of low-nutrient, high-calorie foods in toddlers from Mexican American families, but not with overall dietary quality. Findings underscore the need for increased

This article mainly investigates a fractional-order SEIQR model with a logistic input and a saturated incidence rate, and formulates a fractional optimal control problem (FOCP). The nonnegativity of solutions is analyzed, and the existence of disease

Coronavirus disease 2019 (COVID-19) is a respiratory illness caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Health-related quality of life (HRQoL) has been observed to decline after COVID-19 hospitalization, with anxiety and