enquête (1) société (humaine) (1) anticorps (1) infection (1) analyse (1) épidémiologie (1) distribution (1) latitude (1) adulte (1) Epidemiology (1) Cases (1) Hepatitis C virus (1) HIV antibodies (1) Delta-associated agent (1) Work (1) Variations (1) Ci (Chinese poetry) (1) Population (1) Latitude (1) Infection (1) Hepatitis B virus (1) Evidence (1) Epidemiology (1) Design (1) Cases (1) Regions (1) Design (1) Analysis (1) Equator (1) Transmission (1)