Elevated levels of immunoglobulin A to Giardia lamblia during a waterborne outbreak of gastroenteritis.
Birkhead G, Janoff EN, Vogt RL, Smith PD. Elevated levels of immunoglobulin A to Giardia lamblia during a waterborne outbreak of gastroenteritis. J Clin Microbiol. 1989 Aug; 27(8):1707-10.