The counterelectrophoresis test was used in population surveys for hepatitis B antigen (HB
Ag) carriers in Panama. Non-Amerind groups generally had a low prevalence of …

Single radial immune diffusion and counterelectrophoresis tests were used to examine
2,593 serum speciments from apparently healthy men, women, and children of Peru for the …

Previous studies of hepatitis B antigen (HBsAg) and antibody to it (anti-HBs) showed widely
differing exposures between Panamanian Indian tribes. Cuna Indians living on islands …

Counterelectrophoresis was used for testing of 1,623 sera from individuals from Panama's
three major Indian tribes for hepatitis B antigen (HB Ag). A random subsample from each …

Hepatitis B surface antigen was not. detected in 1000 samples of serum collected from
healthy residents of Trinidad and Tobago. Surface antibody was detected in 13-7% of …

Abstract The population of Graciosa Bay, Santa Cruz, British Solomon Islands Protectorate,
was tested for HBsAg and anti-HBs in 1973 and 1974. Both the antigen and antibody …

Serologic tests for hepatitis B prevalence and immunogenetic characterizations were carried
out on a sample of 800 persons from several isolated tribes of the lower Amazon basin and …

Abstract Punyagupta, S., LC Olson, U. Harinasuta, K. Akarawong and W. Varawidhya (Dept.
of Medicine, Ramathibodi Faculty of Medicine, Bangkok, Thailand). The epidemiology of …

Specimens of blood from 1,098 patients and employees at two institutions for the mentally
retarded were tested by the passive hemagglutination assay for the presence of antibody …

There is little information on the prevalence of hepatitis B surface antigen and antibody in
children outside institutions in temperate zones. Sera collected from children admitted to two …