Authors
Brendan R. Jackson, MD, Shahed Iqbal, PhD, Barbara Mahon, MD.
Abstract
These revised recommendations of the Advisory Committee on Immunization Practices update recommendations published in MMWR in 1994 (1) and include updated information on the two currently available vaccines and on vaccine safety. They also include an update on the epidemiology of enteric fever in the United States, focusing on increasing drug resistance in Salmonella enterica serotype Typhi, the cause of typhoid fever, as well as the emergence of Salmonella serotype Paratyphi A, a cause of paratyphoid fever, against which typhoid vaccines offer little or no protection.
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