Volume 77, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


We describe the design and report baseline results of a cluster-randomized intervention to determine the importance of bovines for transmission in southern China. The study involves four matched village pairs in Hunan and Jiangxi Provinces, with a village within each pair randomly selected as intervention (human and bovine praziquantel treatment) or control (human praziquantel treatment only). Total study population prevalences at baseline were 12.4% (n = 5,390) and 15.2% (n = 1,573) for humans and bovines, respectively; village prevalences were similar within pairs. Bovine contamination index calculations showed that bovines less than 24 months of age were responsible for 74% of daily bovine environmental contamination with eggs. The village characteristics and baseline results underpin a rigorous study, which has major implications for deployment of a transmission-blocking bovine vaccine against The combination of such a vaccine with other control strategies could potentially eliminate from southern China.


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  • Received : 18 Feb 2007
  • Accepted : 19 Jun 2007

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