Investigating the relationship of schools reopening to increases in COVID-19 infections using event study methodology: The case of the Delta variant.

Background: Hypothesis: School reopening had a significant impact on COVID-19 infection rates across USA states.

Methods: Eight states with fully reopened public schools were studied. States who did not previously have stay-at-home orders for a minimum of 30 days were excluded from the study so that increases in infection rates would be solely due to the economies of reopening.

Relationship of George Floyd protests to increases in COVID-19 cases using event study methodology.

Background: Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities.

Methods: Eight US cities were studied in which protestors in the tens of thousands were reported. Only cities that reside in states whose stay-at-home orders had been rescinded or expired for a minimum of 30 days were included in the sample to account for impact of growth rates solely due to economies reopening.

Drug testing for newborn exposure to illicit substances in pregnancy: pitfalls and pearls.

Estimates of the prevalence of drug usage during pregnancy vary by region and survey tool used. Clinicians providing care to newborns should be equipped to recognize a newborn who has been exposed to illicit drugs during pregnancy by the effects the exposure might cause at the time of delivery and/or by drug testing of the newborn. The purpose of this paper is to provide an overview of the literature and assess the clinical role of drug testing in the newborn.

Structure-activity relationship between carboxylic acids and T cell cycle blockade.

This study was designed to examine the potential structure-activity relationship between carboxylic acids, histone acetylation and T cell cycle blockade. Toward this goal a series of structural homologues of the short-chain carboxylic acid n-butyrate were studied for their ability to block the IL-2-stimulated proliferation of cloned CD4+ T cells. The carboxylic acids were also tested for their ability to inhibit histone deacetylation.