Abstract
In 1962, the natural foci of plague in the Republic of Vietnam began to evidence renewed activity. Early attempts to control the outbreaks with DDT apparently failed and the disease became widespread throughout the northern 2/3 of the country. Tests on wild-caught fleas collected in Saigon and Nhatrang showed that the fleas ( Xenopsylla cheopis ) in these 2 cities were resistant to DDT (Cavanaugh et al., 1968, Amer. J. Publ. Hlth Hyg. 58 : 742–52).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
