Surveillance for waterborne disease outbreaks associated with drinking water—United States, 2011–2012. MMWR Morb Mortal Wkly Rep. 64, 842–8.
(2015). Cryptosporidiosis surveillance–United States, 2011-2012; Giardiasis surveillance–United States, 2011-2012. Morbidity and Mortality Weekly Report: Surveillance Summaries. 64(3),
(2015).