Further observations on hydrogen peroxide antisepsis and COVID-19 cases among healthcare workers and inpatients.

Background: The use of prophylactic antisepsis to protect against coronavirus disease 2019 (COVID-19) has been suggested. This study investigated hydrogen peroxide antisepsis (HPA) at two hospitals in Ghana.

Methods: Cases of COVID-19 among healthcare workers (HCWs) using hydrogen peroxide (HP-HCWs) or not using hydrogen peroxide (NHP-HCWs), vaccinated or unvaccinated, were recorded at Shai-Osudoku Hospital (SODH), Dodowa, and Mount Olives Hospital (MOH), Techiman, between May 2020 and December 2021.

Morphometric study of specific heart granules in the grey seal (Halichoerus grypus).

Specific heart granules in the grey seal, Halichoerus grypus, a marine mammal, were studied and compared with those in the Wistar rat by ultrastructural morphometry. There is extreme paucity of these granules in atrial cells of the seal, even in the region of the Golgi apparatus, compared with those in the rat. By numerical concentration, granules in the seal are 23 times fewer in number than in the rat.

Ultrastructural and morphometric features of nodal and impulse-conducting cardiac myocytes of the bat Pipistrellus pipistrellus.

Cells of the impulse-generating and conducting tissues of the insect-eating bat Pipistrellus pipistrellus were studied and evaluated using ultrastructural morphometry. Sinoatrial node cells are smaller than working atrial cells and measure about 6.5 microm in diameter.