ANSWERS: 1
-
<div class="section1">
The disease agents that cause dysentery do not confer immunity against reinfection at a later date. As of 2005 there are no vaccines for bacillary dysentery or amebic dysentery; however, a vaccine against schistosomiasis is under investigation. An oral vaccine against rotavirus infections was developed for small children but was withdrawn in 2004 because it was associated with an increased risk of small-bowel disorders. Newer vaccines against rotaviruses and caliciviruses are being developed as of 2005.
Source: The Gale Group. Gale Encyclopedia of Medicine, 3rd ed.";

by 3 hours ago
