Frailty and pre-frailty associated with long-term diminished physical performance and quality of life in breast cancer and hematopoietic cell transplant survivors.

Physical frailty as a sign of accelerated aging is not well characterized in breast cancer (BC) and hematopoietic cell transplant (HCT) survivors and its correlation with outcomes and quality of life (QOL) is not defined. We conducted a prospective study to determine the prevalence of frailty in adult BC and HCT survivors, examine its impact on QOL, and determine its association with , a molecular biomarker for biological aging. The study included 59 BC and 65 HCT survivors.

Likely Vertical Transmission of Neonatal SARS CoV-2 Infection.

Maternal severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection can affect placental function, but the possibility of intrauterine transmission has been debated. Several authors have published inclusion criteria for vertical transmission, but few reports exist that are able to meet the suggested requirements. Despite the fact that the majority of fetuses born to infected mothers do well, others become critically ill.

Resolved but Not Forgotten: The Effect of Resolved Placenta Previa on Labor Management.

Objectives: Placenta previa is diagnosed in up to 15% of pregnancies at the anatomy ultrasound and 0.5% persist to term. There is limited data regarding pregnancy outcomes with resolved previa.

Multigeneration reproduction ratios and the effects of clustered unvaccinated individuals on epidemic outbreak.

An SIR epidemiological community-structured model is constructed to investigate the effects of clustered distributions of unvaccinated individuals and the distribution of the primary case relative to vaccination levels. The communities here represent groups such as neighborhoods within a city or cities within a region. The model contains two levels of mixing, where individuals make more intra-group than inter-group contacts.