Question

Question 4

Cryptosporidiosis is an enteric illness that is frequently waterborne. Khalakdina and colleagues (2003)could find no published studies of the risk factors for cryptosporidiosis in immunocompetent adults. Patients with cryptosporidiosis were recruited from a surveillance system, and age-matched controls were recruited by random-digit dialing. Subjects in both groups were interviewed by telephone to obtain information about previous exposures.

Which study design most accurately describes this scenario?

		Case-control
		Cross-sectional
		Case-series
		Clinical Trial

Answer 1

This is Case series, since all the patients have the diseases. the interviewed to understand about their previous exposure.