Vol 61, No 1 (2010)
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Published online: 2010-05-21

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Public health significance of chickenpox on ships - conclusions drawn from a case series in the port of Hamburg

Clara Schlaich, Tobias Riemer, Maike Lamshöft, Jan-Gerd Hagelstein, Marcus Oldenburg
IMH 2010;61(1):28-31.

Abstract

Background: Despite international notification requirements, the magnitude of disease transmission on board ships remains undetermined. This case series aims to exemplify that varicella aboard ships is a topic of interest for maritime medicine and of public health significance.
Material and methods: Systematic presentation of cases of chickenpox reported to the Hamburg Port Health Authority between November 2007 and April 2008. A systematic literature search on 'ships and chickenpox' was performed.
Results: Five crew cases of chickenpox were reported from two passenger ships and two cargo ships. The cases originated from Indonesia (2), the Philippines (1), and Sri Lanka (2). Three cases were notified by the shipmaster, one by a general practitioner, and one by the immigration service. Sources of infection were other crewmembers, passengers, and persons in the home countries.
Conclusions: This description of five varicella cases aboard ships points to the significance of the disease among seafarers. Many seafarers originate from tropical countries where seroconversion to varicella zoster virus generally occurs in late adolescents and adults. Thus, a substantial portion of the crew may be non-immune and have the potential to introduce the disease from their home country to the ship, or are at risk for infection on the ship. Port health authorities, shipmasters, and doctors need to be well informed about the relevance of chickenpox on ships and the recommended control measures. Travellers should be advised to report to the ship doctor with any signs of infectious disease.
Int Marit Health 2010; 61, 1: 28-31

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References

  1. International Health Regulations, 2nd edition ISBN 978924158041-0. WHO Press, 20 Ave. Geneva, 2005.
  2. Cramer EH, Gu DX, Durbin RE, et al. Vessel Sanitation Pogram Environmental Health Inspection Team. Diarrheal disease on cruise ships, 1990-2000: the impact of environmental health programs. Am J Prev Med. 2003; 24(3): 227–233.
  3. Ferson MJ, Ressler KA. Bound for Sydney town: health surveillance on international cruise vessels visiting the Port of Sydney. Med J Aust. 2005; 182(8): 391–394.
  4. Gunderson EK, Garland C, Hourani LL. Infectious disease rates in the U.S. Navy, 1980 to 1995. Mil Med. 2001; 166(6): 544–549.
  5. Idnani N. Vaccination as a method of prevention of spread of varicella among seafarers. Session 4, Topic 9. Paper 3. 10th International Symposium on Maritime Health Goa, 23-26.08.2009.
  6. Lee BW. Review of varicella zoster seroepidemiology in India and Southeast Asia. Trop Med Int Health. 1998; 3(11): 886–890.
  7. Nardone A, de Ory F, Carton M, et al. The comparative sero-epidemiology of varicella zoster virus in 11 countries in the European region. Vaccine. 2007; 25(45): 7866–7872.
  8. Schlaich CC, Oldenburg M, Lamshöft MM. Estimating the risk of communicable diseases aboard cargo ships. J Travel Med. 2009; 16(6): 402–406.
  9. European Centres for Disease Control. Risk Assessment — 12 May 2008. Risk assessment for varicella virus transmission of affected cruise ship crew members to passengers. www.ecdc.eu (05.2009).
  10. World Health Organization. International Medical Guide for Ships 3rd edition 2007.