Appendix D. Insects and Microorganisms

Guidelines for Environmental Infection Control in Health-Care Facilities (2003)

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Table D.1. Microorganisms isolated from arthropods in health-care settings

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Cockroaches

Microorganisms isolated from cockroaches in healthcare settings.
Microorganism category Microorganisms References
Gram-negative bacteria Acinetobacter spp.;
Citrobacter freundii;
Enterobacter spp.,
E. cloacae;
Escherichia coli;
Flavobacterium spp.;
Klebsiella spp.;
Proteus spp.;
Pseudomonas spp.,
P. aeruginosa,
P. fluorescens,
P. putida;
Salmonella spp.;
Serratia spp.,
S. marcescens;
Shigella boydii		 1048, 1051, 1056, 1058, 1059, 1062
Gram-positive bacteria Bacillus spp.;
Enterococcus faecalis;
Micrococcus spp.;
Staphylococcus aureus,
S. epidermidis;
Streptococcus spp.,
S. viridans		 1056, 1058, 1059
Acid-fast bacteria Mycobacterium tuberculosis 1065
Fungi Aspergillus niger;
Mucor spp.;
Rhizopus spp.		 1052, 1059
Parasites Endolimax nana;
Entamoeba coli		 1059

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Houseflies

Microorganisms isolated from houseflies in healthcare settings.
Microorganism category Microorganisms References
Gram-negative bacteria Acinetobacter spp.;
Campulobacter fetus subsp. Jejuni;
Chlamydia spp.;
Citrobacter fruendii;
Enterobacter spp.;
Escherichia coli;
Helicobacter pylori;
Klebsiella spp.;
Proteus spp.;
Pseudomonasaeruginosa;
Serratia marcescens;
Shigella spp.		 1047, 1048, 1050, 1053–1055, 1060
Gram-positive bacteria Bacillus spp.;
Enterococcus faecalis;
Micrococcus spp.;
Staphylococcus spp. (coagulase-negative),
S. aureus;
Streptococcus spp.,
S. viridans		 1048, 1060
Fungi / yeasts Candida spp.;
Geotrichum spp.		 1060
Parasites Endolimax nana;
Entamoeba coli		 1060
Viruses Rotaviruses 1049

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Ants

Microorganisms isolated from ants in healthcare settings.
Microorganism category Microorganisms References
Gram-negative bacteria Acinetobacter spp.;
Escherichia coli;
Klebsiella spp.;
Neisseria sicca;
Proteus spp.;
Providencia spp.;
Pseudomonas aeruginosa,
P. fluorescens		 1057
Gram-positive bacteria Bacillus spp.,
B.cereus, B. pumilis;
Clostridium cochlearium,
C. welchii;
Enterococcus faecalis;
Staphylococcus spp. (coagulase-negative),
S. aureus;
Streptococcus pyrogenes		 1057

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Spiders

Microorganisms isolated from spiders in healthcare settings.
Microorganism category Microorganisms References
Gram-negative bacteria Acinetobacter spp.;
Citrobacter freundii;
Enterobacteraerogenes;
Morganella morganii		 1048
Gram-positive bacteria Staphylococcus spp. (coagulase-negative) 1048

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Mites, midges

Microorganisms isolated from mites and midges in healthcare settings.
Microorganism category Microorganisms References
Gram-negative bacteria Acinetobacter spp.;
Burkholderia cepacia;
Enterbacter agglomerans,
E. aerogenes;
Hafnia alvei;
Pseudomonas aeruginosa		 1048
Gram-positive bacteria Staphylococcus spp. (coagulase-negative) 1048

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Mosquitoes

Microorganisms isolated from mosquitoes in healthcare settings.
Microorganism category Microorganisms References
Gram-negative bacteria Acinetobacter calcoaceticus;
Enteobacter cloacae		 1048
Gram-positive bacteria Enterococcus spp.;
Staphylococcus spp. (coagulase-negative)		 1048

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Page last reviewed: November 5, 2015
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Healthcare Quality Promotion (DHQP)