academic article

• Enteric illness risks before and after water treatment improvements..  Journal of water and health.  7:581-589. 2009
• How clean must our drinking water be: the importance of protective immunity..  The Journal of infectious diseases.  191:809-814. 2005
• Protective immunity associated with a strong serological response to a Cryptosporidium-specific antigen group, in HIV-infected individuals..  The Journal of infectious diseases.  192:618-621. 2005