Pre-exposure Prophylaxis (PrEP) Initiation Among Black and Latina Cisgender Women Receiving HIV Prevention Care Coordination Services in New York City.

Black and Latina cisgender women are disproportionately impacted by HIV in the US. Although PrEP is effective at preventing HIV infection, uptake in this population remains low. The aim of the study was to examine sociodemographic, behavioral, clinical, and psychosocial factors associated with PrEP initiation (defined as receiving a PrEP prescription) among 565 cisgender women enrolled in an HIV prevention services coordination program in NYC from January 2017 to December 2019 who met HIV risk criteria for PrEP. Of these, 26% initiated PrEP. Latina women were significantly more likely than white women to have initiated PrEP (Latina: 29.7%; Black: 26.1%; White: 16.3%; Other: 7.4%). PrEP initiation was significantly associated with PrEP awareness, an annual income < $20,000, being unstably housed, receiving benefits navigation services, and reporting non-injection drug use and/or a recent sexual relationship with an HIV-positive partner. The relatively low rate of PrEP initiation we observed suggests the need to increase PrEP access and uptake among women, particularly Black and Latina women who continue to be disproportionately at risk for HIV.

Light and temperature control the seasonal distribution of thaumarchaeota in the South Atlantic bight.

Mid-summer peaks in the abundance of Thaumarchaeota and nitrite concentration observed on the Georgia, USA, coast could result from in situ activity or advection of populations from another source. We collected data on the distribution of Thaumarchaeota, ammonia-oxidizing betaproteobacteria (AOB), Nitrospina, environmental variables and rates of ammonia oxidation during six cruises in the South Atlantic Bight (SAB) from April to November 2014. These data were used to examine seasonality of nitrification in offshore waters and to test the hypothesis that the bloom was localized to inshore waters. The abundance of Thaumarchaeota marker genes (16S rRNA and amoA) increased at inshore and nearshore stations starting in July and peaked in August at >107 copies L-1. The bloom did not extend onto the mid-shelf, where Thaumarchaeota genes ranged from 103 to 105 copies L-1. Ammonia oxidation rates (AO) were highest at inshore stations during summer (to 840 nmol L-1 d-1) and were always at the limit of detection at mid-shelf stations. Nitrite concentrations were correlated with AO (R = 0.94) and were never elevated at mid-shelf stations. Gene sequences from samples collected at mid-shelf stations generated using Archaea 16S rRNA primers were dominated by Euryarchaeota; sequences from inshore and nearshore stations were dominated by Thaumarchaeota. Thaumarchaeota were also abundant at depth at the shelf-break; however, this population was phylogenetically distinct from the inshore/nearshore population. Our analysis shows that the bloom is confined to inshore waters during summer and suggests that Thaumarchaeota distributions in the SAB are controlled primarily by photoinhibition and secondarily by water temperature.