@entity1 adenoviruses (HAdVs) have been related to several waterborne diseases such as @entity697 , @entity2024 , and @entity1576 , and it has been shown that an important @entity1 exposure pathway is through recreational waters. However, HAdV occurrence at recreational freshwater beaches has not been previously investigated. In this study, a total of 58 water samples were collected from two recreational beaches on Lake Michigan (i.e., @entity575 Beach and Washington Park Beach) during the summer of 2004. Occurrences of HAdVs in these lake samples were determined using two hexon-based real-time PCR assays (one for monitoring all 51 serotypes of HAdVs and another for specifically detecting F species HAdVs, i.e., serotypes 40 and 41) and compared to an integrated cell culture (ICC) PCR method. The real-time PCR results showed that 8 of 30 @entity575 Beach samples and 6 of 28 Washington Park Beach samples contained HAdVs, and F species HAdVs were detected in three of these positive samples. The concentrations of HAdVs ranged from (1.7 +/- 0.7) x 10(1) to (3.4 +/- 0.8) x 10(2) and from (7 +/- 2) x 10(0) to (3.8 +/- 0.3) x 10(3) virus particles/liter for @entity575 Beach and Washington Park Beach, respectively. F species HAdVs were detected at levels ranging from (4.8 +/- 0.8) x 10(1) to (4.6 +/- 1.5) x 10(2) virus particles/liter. Approximately 60% of the ICC-PCR analyses agreed with the real-time PCR results. This study revealed the occurrence of HAdVs at Lake Michigan recreational beaches. Given the potential health risks, further assessment regarding sources, virus transport, and survival is needed to improve the safety of the region.

Occurrence of XXXX adenoviruses at two recreational beaches of the great lakes.

@entity1 :: ('9606', 'Species') :: ['human', 'Human'] @entity697 :: ('MESH:D000208', 'Disease') :: ['acute gastroenteritis'] @entity575 :: ('MESH:D012834', 'Chemical') :: ['Silver'] @entity1576 :: ('MESH:D012131', 'Disease') :: ['respiratory illness'] @entity2024 :: ('MESH:D003231', 'Disease') :: ['conjunctivitis']
@entity1 :: (9606,Species) :: ['human']
