Abstract
Thirty-two waterborne outbreaks in Sweden are known during 1975 - 1984, affecting nearly 12 000 people. These range from single family outbreaks to community outbreaks affecting up to 3 000 people. Microbial agents have been isolated in about 40 % of the outbreaks, the rest are of unknown etiology. Epidemiological investigations have shown that only a fraction of the actual number of cases are initially reported. The real number as judged from epidemiological follow-up investigations was in many instances tenfold higher. In almost all the cases, the cause of the outbreaks are technical deficiencies like back-siphonage of wastewater along drainage pipes, broken sewerage or sudden pollution of raw water intakes coinciding with malfunction of chlorination.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.