PCR Improvements after the Cryptosporidium Milwaukee Outbreak in 1993

In the spring of 1993, a massive outbreak of the parasite Cryptosporidium occurred in the greater area of Milwaukee, Wisconsin. The outbreak resulted in a total of 69 deaths and 403,000 residents
became sick.

Explain how the outbreak contributed to the advancement of Cryptosporidium surveillance in water via Polymerase Chain Reaction (PCR).