Beach sand and the potential for infectious disease transmission: Observations and recommendations

Helena M. Solo-Gabriele, Valerie J. Harwood, David Kay, Roger S. Fujioka, Michael J. Sadowsky, Richard L. Whitman, Andrew Wither, Manuela Caniça, Rita Carvalho da Fonseca, Aida Duarte, Thomas A. Edge, Maria J. Gargaté, Nina Gunde-Cimerman, Ferry Hagen, Sandra L. McLellan, Alexandra Nogueira da Silva, Monika Novak Babič, Susana Prada, Raquel Rodrigues, Daniela RomãoRaquel Sabino, Robert A. Samson, Esther Segal, Christopher Staley, Huw D. Taylor, Cristina Veríssimo, Carla Viegas, Helena Barroso, João C. Brandão

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Recent studies suggest that sand can serve as a vehicle for exposure of humans to pathogens at beach sites, resulting in increased health risks. Sampling for microorganisms in sand should therefore be considered for inclusion in regulatory programmes aimed at protecting recreational beach users from infectious disease. Here, we review the literature on pathogen levels in beach sand, and their potential for affecting human health. In an effort to provide specific recommendations for sand sampling programmes, we outline published guidelines for beach monitoring programmes, which are currently focused exclusively on measuring microbial levels in water. We also provide background on spatial distribution and temporal characteristics of microbes in sand, as these factors influence sampling programmes. First steps toward establishing a sand sampling programme include identifying appropriate beach sites and use of initial sanitary assessments to refine site selection. A tiered approach is recommended for monitoring. This approach would include the analysis of samples from many sites for faecal indicator organisms and other conventional analytes, while testing for specific pathogens and unconventional indicators is reserved for high-risk sites. Given the diversity of microbes found in sand, studies are urgently needed to identify the most significant aetiological agent of disease and to relate microbial measurements in sand to human health risk.

Original languageEnglish (US)
Pages (from-to)101-120
Number of pages20
JournalJournal of the Marine Biological Association of the United Kingdom
Volume96
Issue number1
DOIs
StatePublished - 2016

Keywords

  • Beach sand
  • bacteria
  • fungi
  • microbes

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    Solo-Gabriele, H. M., Harwood, V. J., Kay, D., Fujioka, R. S., Sadowsky, M. J., Whitman, R. L., Wither, A., Caniça, M., Carvalho da Fonseca, R., Duarte, A., Edge, T. A., Gargaté, M. J., Gunde-Cimerman, N., Hagen, F., McLellan, S. L., Nogueira da Silva, A., Novak Babič, M., Prada, S., Rodrigues, R., ... Brandão, J. C. (2016). Beach sand and the potential for infectious disease transmission: Observations and recommendations. Journal of the Marine Biological Association of the United Kingdom, 96(1), 101-120. https://doi.org/10.1017/S0025315415000843