Antibiotic Stewardship in Chorioamnionitis Exposed Neonates, A Quality Improvement Project.

Background: Rates of neonatal early onset sepsis (EOS) in term infants have recently decreased. The 2018 AAP guidelines for the management of infants at risk for early onset sepsis allows for using a multivariate risk assessment to determine need for empiric antibiotics in infants 35 weeks or greater, including those exposed to chorioamnionitis.

Methods: A quality improvement (QI) project was undertaken to implement use of EOS calculator in chorioamnionitis exposed infants with an aim to safely decrease antibiotic exposure.

Howler monkey foraging ecology suggests convergent evolution of routine trichromacy as an adaptation for folivory.

Primates possess remarkably variable color vision, and the ecological and social factors shaping this variation remain heavily debated. Here, we test whether central tenants of the folivory hypothesis of routine trichromacy hold for the foraging ecology of howler monkeys. Howler monkeys (genus ) and paleotropical primates (Parvorder: Catarrhini) have independently acquired routine trichromacy through fixation of distinct mid- to long-wavelength-sensitive () opsin genes on the X-chromosome.

Color Vision Variation as Evidenced by Hybrid L/M Opsin Genes in Wild Populations of Trichromatic New World Monkeys.

Platyrrhine (New World) monkeys possess highly polymorphic color vision owing to allelic variation of the single-locus L/M opsin gene on the X chromosome. Most species consist of female trichromats and female and male dichromats. Howlers (genus ) are an exception; they are considered to be routinely trichromatic with L and M opsin genes juxtaposed on the X chromosome, as seen in catarrhine primates (Old World monkeys, apes, and humans).

Feeding selectivity by mantled howler monkeys (Alouatta palliata) in relation to leaf secondary chemistry in Hymenaea courbaril.

This study is a quantitative examination of primate feeding selectivity in relation to secondary chemistry within a single plant species, Hymenaea courbaril. It provides the first evidence that sesquiterpenes may act as feeding deterrents in mantled howler monkeys. A free-ranging group of mantled howler monkeys at the study site of Sector Santa Rosa, Area de Conservacion Guanacaste, Costa Rica were observed for the 2-month period of H.