Nigeria healthcare worker SARS-CoV-2 serology study: Results from a prospective, longitudinal cohort.

Healthcare workers, both globally and in Nigeria, have an increased risk for SARS-CoV-2 infection compared with the general population due to higher risk contacts, including occupational exposures. In addition, primary healthcare workers represent an important group for estimating prior infection to SARS-CoV-2 because they work at the first point-of-contact for most patients yet have not been included in prior COVID-19 seroepidemiology research in Nigeria. We sought to evaluate baseline seroprevalence, rates of seroconversion (IgG- to IgG+) and seroreversion (IgG+ to IgG-), change in IgG concentration at 3- and 6-month follow-up, and factors associated with seropositivity.

Sero-epidemiology of human T-cell lymphotropic viruses-1 and -2 infection among pregnant women attending Abuja Teaching Hospital, Nigeria.

Background: There is the paucity of HTLV-1/-2 studies on Nigerian pregnant women despite the medical and public health significance of maternal-to-child transmission of HTLV-1/-2.

Objective: This study aims to determine the seroprevalence and risk factors of HTLV-1/-2 infections among pregnant women attending the University of Abuja Teaching Hospital (UATH), Abuja, Nigeria.

Materials And Methods: Blood samples were collected from consented pregnant women and analysed for ant-HTLV-1/-2 total antibodies using a commercial Enzyme-Linked Immunosorbent Assay (ELISA) kit.