Seroprevalence of B. pertussis infection and the changes of specific antibody levels in health care workers during the first two years of COVID-19 in Wuhu, China.

Background: The reported number of pertussis cases declined after the implementation of COVID-19 prevention and control measures, however, the burden of pertussis among adults in China remains largely unknown. Additionally, the waning of natural antibody level has also rarely been assessed.

Methods: A total of 762 healthcare workers (HCWs) who had underwent the health examinations in 2021 and 2022 were included.

Seroprevalence of tetanus and pertussis antibodies among health care workers in Wuhu, China.

This study aimed to elucidate the seroprevalence of antibodies to tetanus and pertussis among Chinese health care workers. Blood specimens from health care workers were collected during the 2021 annual medical examination at the First People's Hospital of Wuhu. Commercial ELISA kits were employed to quantify serum IgG antibodies against tetanus toxin (anti-TT IgG) and both IgG and IgA antibodies against pertussis toxin (anti-PT IgG, anti-PT IgA).

Case Report: Various Clinical Manifestations Caused by Varicella-Zoster Virus in a Family.

A family cluster of varicella-zoster virus (VZV) infections was reported. Four family members (two children and their parents) continuously develop varicella after the grandmother's herpes zoster. The unvaccinated 16-month-old infant and his mother developed primary varicella with atypical clinical presentation; however, his 28-year-old father presented with a typical generalized vesicular rash.

Effects of Repeated Lipopolysaccharide Treatment on Growth Performance, Immune Organ Index, and Blood Parameters of Sprague-Dawley Rats.

Introduction: The study was designed to investigate the effects of repeated lipopolysaccharide (LPS) treatment on growth performance, lymphoid organ indexes, and blood cells in Sprague-Dawley rats.

Material And Methods: Forty healthy weaned Sprague-Dawley rats were randomly equally divided into LPS and control groups. Each rat in the LPS group was injected the caudal vein with LPS (100 μg/kg b.