Related by context. All words. (Click for frequent words.) 72 cryptosporidium 66 cryptosporidiosis 66 cryptosporidium parasite 64 Cryptosporidium parvum 63 parasite cryptosporidium 61 Cryptosporidiosis 61 Giardia 61 Giardia lamblia 61 Shigella bacteria 60 protozoan parasite 60 Legionella 60 Enterococci 60 E coli bacteria 60 E. Coli bacteria 60 parasite Cryptosporidium 60 pseudomonas aeruginosa 59 Enterococcus 59 E. coli 59 coli 59 waterborne bacteria 59 algal toxins 59 Legionella pneumophila 58 bacteria 58 E coli 58 Coliform 58 Legionella bacteria 58 E.coli 58 E.coli bacteria 58 Salmonella typhi 58 e coli bacteria 58 Naegleria fowleri 58 naturally occurring bacterium 57 giardia 57 waterborne pathogens 57 C. parvum 57 E Coli 57 giardiasis 57 E coli O# 57 Campylobacter bacteria 56 O# strain 56 chlorine disinfection 56 microscopic parasite 56 vancomycin resistant 56 staphylococci 56 Moraxella catarrhalis 56 Bilharzia 56 Mycoplasma pneumoniae 56 Enterobacter sakazakii 56 vibrio parahaemolyticus bacteria 56 Escherichia Coli 55 Staphylococcus aureus MRSA 55 E.coli O# 55 E. coli bacteria 55 aeruginosa 55 Acanthamoeba 55 Cryptosporidium parasite 55 e.coli 55 opportunistic pathogen 55 enterococcus bacteria 55 coliforms 55 Mycobacterium bovis 55 Shigella 55 K. pneumoniae 55 Staph aureus 55 Vancomycin resistant 55 diarrheal illness 55 opportunistic pathogens 55 bacterial spores 55 waterborne microorganisms 55 bacterium Listeria monocytogenes 55 algal toxin 54 noroviruses 54 harmful microorganisms 54 Enterococcus bacteria 54 Chlorination 54 bacterium 54 Legionella bacterium 54 microbial contaminants 54 Pseudomonas bacteria 54 Salmonella enterica 54 harmful pathogens 54 oocysts 54 Campylobacter 54 micro organism 54 DBPs 54 E. Coli 54 waterborne parasite 54 O# H7 54 bacterium Vibrio cholerae 54 Salmonella bacteria 54 chloramines 54 Candida species 54 E. faecium 54 Staphylococcus epidermidis 54 legionella bacteria 54 Methicillin resistant 54 Legionnaire disease 54 aspergillus 54 E Coli bacteria 54 Fecal coliform 54 E.Coli 54 fecal coliforms 54 legionella bacterium 54 pathogenic microorganisms 54 enteric bacteria 54 infectious prions 54 Salmonella Typhimurium 54 Streptococcus pneumoniae bacteria 54 E.Coli bacteria 54 Ecoli 54 disinfection byproducts 54 legionella pneumophila 53 Multidrug resistant 53 staphylococcus aureus 53 coli bacteria 53 Salmonella spp 53 parasitic flatworm 53 pathogenic E. coli 53 Strep bacteria 53 Toxoplasmosis 53 Columnaris 53 canine parvovirus 53 Staphylococcus aureus bacterium 53 shigella bacteria 53 cryptosporidium outbreak 53 Escherichia coli Klebsiella pneumoniae 53 linezolid resistant 53 Pseudomonas aeruginosa bacteria 53 Enterococcus faecium 53 micro organisms 53 Salmonella bacterium 53 Serratia marcescens 53 Enterobacter cloacae 53 israelensis 53 Campylobacter jejuni 53 salmonella typhi 53 Schistosoma 53 Aspergillus 53 Leptospira 53 trichloroethene 53 Ascaris 53 staphylococcus bacteria 53 Salmonella 53 campylobacter salmonella 53 microscopic parasites 53 S. enterica 53 pathogens 53 bacterial 53 Chlamydia trachomatis 53 enteroviruses 53 dermatophytes 53 bacteria Escherichia coli 53 oocyst 52 Clostridium difficile C. difficile 52 Vibrio parahaemolyticus 52 vancomycin resistant enterococcus 52 invasive alga 52 bacterial pathogen 52 Escherichia coli bacteria 52 Enteritidis 52 USA# strain 52 rotaviruses 52 clostridium perfringens 52 Vibrio 52 salmonella listeria 52 Escherichia coli O# 52 L. pneumophila 52 Viral Hemorrhagic Septicemia 52 E. faecalis 52 enterobacteria 52 E. coli STEC 52 parvum 52 coliform contamination 52 pork tapeworm 52 perfluorochemicals PFCs 52 whipworm 52 Staphylococcus 52 swimmer itch 52 Dehalococcoides 52 B. burgdorferi 52 methicillin resistant MRSA 52 microcystins 52 subtilis 52 Anabaena 52 Toxoplasma gondii 52 microorganisms 52 full blown haemolytic 52 multiresistant 52 Enterobacter 52 infectious organisms 52 B. fragilis 52 Streptococcus pyogenes 52 residual chlorine 52 MRSA Methicillin 52 arenavirus 52 e coli 52 Batrachochytrium dendrobatidis 52 harmful bacteria 52 fecally contaminated 52 diarrhea abdominal cramps nausea 52 spore forming bacterium 52 Coliform bacteria 52 pneumococci 52 Bacteroides 52 Yersinia 52 infected mosquitos 52 pathogenic organisms 52 fecal coliform bacteria 52 vibrio 51 fecal contamination 51 Didymo 51 Staphylococcus Aureus 51 Streptococcus 51 Staphylococci 51 Salmonella enteritidis 51 faecal contamination 51 Bordetella pertussis 51 whirling disease 51 legionella 51 microbiological contamination 51 Burkholderia 51 Streptococcus pneumoniae S. pneumoniae 51 PFBA 51 spore forming bacteria 51 arboviruses 51 faecal coliforms 51 Noroviruses 51 parasite 51 Chlorine bleach 51 microcystis 51 MDRSP 51 TTHMs 51 human metapneumovirus 51 MRSA Methicillin resistant Staphylococcus 51 Klebsiella 51 bacilli 51 mutagenicity 51 Escherichia coli 51 Fecal coliform bacteria 51 GABHS 51 Coliforms 51 marine biotoxin 51 dieldrin 51 EEE virus 51 Legionnaire Disease 51 bacteria Streptococcus pneumoniae 51 chloramine 51 Vesivirus 51 Total Coliform 51 acinetobacter 51 Rickettsia 51 infectious prion 51 bacterias 51 enterococci 51 microbiological organisms 51 tetrachloroethene 51 aureus 51 Legionnaires Disease 51 pathogenic microbes 51 Antibiotic resistant 51 Streptococcus pneumoniae Haemophilus influenzae 51 Enterococcus faecalis 51 Tularemia 51 Listeria monocytogenes bacteria 51 Staph bacteria 51 varicella virus 51 e.Coli 51 bacterium Staphylococcus aureus 51 H. pylori bacteria 51 algal bloom 51 chlorine disinfectant 51 ESBL producing 51 attenuated strain 51 L. monocytogenes 51 Clostridium perfringens 51 anaerobic bacterium 51 protozoa 51 UV disinfection 51 Fecal Coliform 51 tularemia 51 Roundworms 50 Burkholderia pseudomallei 50 Salmonella Campylobacter 50 shigellosis 50 THMs 50 Salmonella typhimurium 50 MRSA methicillin resistant Staphylococcus 50 corona virus 50 coliform bacteria 50 mycobacteria 50 sylvatic plague 50 foodborne pathogen 50 Chloramines 50 single celled parasite 50 bacterium Mycobacterium 50 Viral Hemorrhagic Septicemia VHS 50 Microcystis 50 Y. pestis 50 kurstaki 50 Streptococcus agalactiae 50 Thoroughly cooking eggs 50 E. coli O# H7 50 infectious microorganisms 50 enterobacteriaceae 50 pathogen 50 coagulase negative staphylococci 50 enterotoxin 50 Pseudomonas aeruginosa 50 Norovirus 50 C. perfringens 50 paramyxoviruses 50 Vibrio cholerae 50 V. parahaemolyticus 50 Calicivirus 50 disinfectant byproducts 50 pathogenic bacterium 50 polioviruses 50 Shiga toxin 50 transmit dengue 50 algaecide 50 Klebsiella bacteria 50 bacterial toxin 50 H7 subtype 50 porcine circovirus type 50 methicillin susceptible Staphylococcus aureus 50 bacterium Streptococcus 50 microorganism 50 simian foamy virus 50 Mycobacteria 50 Salmonellosis 50 waterborne illness 50 biting midges 50 bacteria listeria monocytogenes 50 Trypanosoma brucei 50 microcystin 50 bacterial contamination 50 enterococci bacteria 50 cryptosporidium bug 50 heptachlor 50 mycobacterium tuberculosis 50 Carbon tetrachloride 50 vancomycin resistant enterococci 50 food borne pathogen 50 borne pathogens 50 undulant fever 50 pseudomonas 50 colon bacillus 50 legionella bug 50 BRSV 50 Enterococci bacteria 50 bacterium Listeria 50 causes Chagas disease 50 enterococcus 50 Avian cholera 50 C. sordellii 50 harmful contaminants 50 P. reichenowi 50 microbial pathogens 50 B. cepacia 50 siphonage 50 Streptococcus pneumoniae 50 amebiasis 50 Staphylococcus aureus bacteria 50 T. gondii 50 E. coli Salmonella 50 Cwellyn 49 H.pylori 49 Aeromonas 49 microbial contamination 49 pestis 49 salmonella bacterium 49 Typhimurium 49 trihalomethanes THMs 49 chancroid 49 infected mosquitoes 49 Shigellosis 49 Ciguatera 49 toxaphene 49 Prevotella 49 vibrio parahaemolyticus 49 MRSA Clostridium difficile 49 Fecal bacteria 49 parainfluenza 49 bacteria Pseudomonas aeruginosa 49 Quagga mussels 49 toxoplasma gondii 49 EPA Safe Drinking 49 HAAs 49 amoeba Naegleria fowleri 49 macrolide resistant 49 disinfection 49 naturally occurring bacteria 49 Salmonella Enteritidis SE 49 Stachybotrys 49 microfilariae 49 bacteria Staphylococcus aureus 49 Propionibacterium 49 E. coli strain 49 commensal bacteria 49 listeria salmonella 49 salmonellae 49 spore forming 49 parasitic organisms 49 drinking unpasteurised milk 49 fecal bacteria 49 chlorination 49 S. neurona 49 ecoli 49 pathogenic strains 49 WNV 49 Virkon ® S 49 helminths 49 Listeria bacteria 49 Yersinia pestis 49 Neisseria meningitides 49 parainfluenza virus 49 H7 virus 49 urease 49 Legionnaires disease 49 Haemophilus 49 fungal organisms 49 E. coli O# [001] 49 Babesia 49 Chlamydophila pneumoniae 49 quaternary ammonium compounds 49 Pathogens 49 Adenoviruses 49 VHSV 49 chlorine residuals 49 pathogenic micro organisms 49 protozoans 49 helicobacter pylori 49 Reverse osmosis 49 P. aeruginosa 49 methicillin resistant S. aureus 49 bacterial colonization 49 fecal material 49 Mosquito larvae 49 chlorinated hydrocarbon 49 Clostridia 49 gaseous chlorine 49 P aeruginosa 49 bifenthrin 49 Clostridium 49 meningococcal bacteria 49 perfluorinated chemicals 49 S. aureus 49 H#N# subtype 49 anthracis 49 faecium 49 Hantavirus 49 RWIs 49 Aspergillus fumigatus 49 vibrio cholerae 49 Staph 49 E.coli O# H7 49 T. pallidum 49 babesiosis 49 Escherichia coli E. coli 49 Vancomycin Resistant 49 Streptococcus equi 49 Plasmodium species 49 Chloramine 49 Zebra mussels 49 genus Plasmodium 49 bacterial contaminants 49 nitrate contamination 49 Campylobacter infections 49 mosquito larva 49 triclocarban 49 Meningococcemia 49 zebra mussel larvae 49 vibrios 49 B. abortus 49 West Nile encephalitis 49 enterococcal 49 Cyanobacteria 49 Klebsiella pneumoniae 49 Cyclospora 49 anaerobes 49 microbials 49 tuberculosis bacterium 49 eating undercooked meat 49 Hydrogen sulfide 49 monkeypox virus 48 Trichophyton 48 Shigella infections 48 cyanobacteria 48 prions 48 waterborne illnesses 48 green alga 48 vibrio cholera 48 causative agents 48 alphavirus 48 bacteria viruses fungi 48 schistosomiasis 48 Methicillin 48 Quagga mussel 48 transmissible spongiform encephalopathy 48 Chromium VI 48 streptococcus pneumoniae 48 VRSA 48 Propionibacterium acnes 48 PRRS virus 48 Metarhizium anisopliae 48 lymphocytic choriomeningitis virus 48 Staphylococcus bacteria 48 alachlor 48 quaggas 48 carbapenem resistant 48 S. pneumoniae 48 WNV infection 48 E.coli bug 48 Chlorinated 48 H pylori 48 Borrelia 48 E. Coli O# H7 48 mupirocin 48 stachybotrys 48 zoonotic pathogens 48 fecal coliform contamination 48 Salmonella enterica serovar 48 foodborne infections 48 bilharzia 48 Staphylococcus aureus 48 strep bacteria 48 Trichinella 48 viral hemorrhagic septicemia VHS 48 parasite plasmodium 48 saxitoxin 48 chlordane 48 Pseudomonas fluorescens 48 H. Pylori 48 carbapenem resistant Klebsiella pneumoniae 48 P. mirabilis 48 schistosomes 48 B. cereus 48 quinolone resistant 48 T. cruzi 48 coccidiosis 48 Escherichia coli O# H7 48 toxoplasma 48 Disinfection 48 parasitic worms 48 reinfection 48 Haemophilus influenza 48 Chlamydia pneumoniae 48 pH#N# 48 varicella zoster virus 48 M. catarrhalis 48 Candida albicans 48 Neisseria meningitidis 48 V. vulnificus 48 bacteriological 48 genotoxic substance 48 ESBL producing E. coli 48 multidrug resistant 48 cocci 48 endotoxins 48 Herpes simplex virus 48 e.coli bacteria 48 Acinetobacter 48 norovirus 48 murine leukemia virus 48 commensals 48 S. typhimurium 48 trematode 48 N. meningitidis 48 Hantavirus Pulmonary Syndrome 48 Bromate 48 aspergillosis 48 TB bacilli 48 Lepto 48 Leptospirosis 48 Pathogenic bacteria 48 bacterium E. coli 48 Viral gastroenteritis 48 MRSA 48 viral gastroenteritis 48 furanones 48 contagious bacterial infection 48 Nitrate contamination 48 S. aureus bacteria 48 Salmonella serotypes 48 Ivermectin 48 Anisakis 48 Anaplasma 48 spirochete 48 inanimate surfaces 48 monocytogenes 48 Helicobacter pylori 48 tick borne 48 golden alga 48 Human metapneumovirus 48 Francisella tularensis 48 pink hibiscus mealybug 48 Legionellosis 48 filoviruses 48 naturally occurring radium 48 perfluorochemicals 48 plague bacterium Yersinia 48 Dengue virus 48 MRSA methicillin resistant 48 spore forming bacterium Bacillus 48 Whirling disease 48 vancomycin resistant enterococci VRE 48 contaminants 48 Hookworms 48 latently infected 48 methicillin 48 Cryptococcus gattii 48 Mycobacterium avium 48 Ehrlichia 48 Bacteria 48 Lactococcus 48 legionnaires disease 48 Trypanosoma cruzi 48 Infected birds 48 CRKP 48 invasive pneumococcal 48 parasitic infection 48 highly pathogenic H#N# virus 48 dracunculiasis 48 organochlorine 48 Enterobacteriaceae 48 Ralstonia 48 FMDV 48 coliform 48 protozoal 48 C. jejuni 48 toxic algae bloom 48 M. bovis 48 chlorine disinfectants used 48 freshwater snails 48 H. influenzae 48 BSE prions 48 hookworms 48 Neisseria gonorrhoeae 48 Rotenone 48 larvicides 48 Salmonella infections 48 zebra mussels 48 trihalomethane 48 neisseria meningitidis 48 H7 subtypes 48 Parvovirus 48 chlorine residual 48 total coliform 48 Epizootic Hemorrhagic Disease 48 MRSA bacteria 48 Onchocerca volvulus 48 Diphtheria 48 coccidia 48 Zebra Mussels 48 campylobacter bacteria 47 Vibrio bacteria 47 Poliovirus 47 etiologic agent 47 viral hemorrhagic septicemia 47 Clostridium difficile spores 47 Coronaviruses 47 superantigen 47 bacterial pneumonias 47 clostridium 47 bacterium Neisseria meningitidis 47 F. tularensis 47 invasive meningococcal disease 47 toxic algae 47 Phages 47 Rhizobium 47 hypervirulent strain 47 Fungal infections 47 dioxane 47 pathogenic bacteria 47 bacterium Clostridium difficile 47 pathogenic viruses 47 TTHM 47 H5 viruses 47 WNV infections 47 Streptococcal 47 S. Typhimurium 47 potent carcinogen 47 arenaviruses 47 pyrethroids 47 protozoan parasites 47 organochlorines 47 C. botulinum 47 babesia 47 cutaneous anthrax 47 avian cholera 47 hMPV 47 Bacteroides fragilis 47 arbovirus 47 Aspergillosis 47 protozoan 47 small strongyles 47 parasite Trypanosoma cruzi 47 blastomycosis 47 MRSA VRE 47 E. coli O# [002] 47 bacterium Salmonella 47 Salmonella serotype 47 sepsis meningitis 47 S Typhi 47 necrotizing pneumonia 47 Shiga toxin producing 47 Pasteurella 47 naturally occurring toxin 47 bacterium Clostridium 47 total coliforms 47 E.coli contamination 47 Naegleria 47 borne pathogen 47 dermatophyte 47 antimicrobial resistant 47 antibiotic resistant bacteria 47 lincomycin 47 Swine flu viruses 47 Resistant Staphylococcus Aureus 47 Methyl mercury 47 parasite Plasmodium 47 Hepatitis E 47 PFGE 47 bacillus 47 Burkholderia cepacia 47 Clostridium difficile C. diff 47 mosquito transmitted 47 phytoplasma 47 bifidobacteria 47 sodium hypochlorite 47 staph germs 47 bacteria Bacillus 47 Staphylococcus aureus S. aureus 47 Aspergillus flavus 47 biotoxin 47 streptococcus bacteria 47 enterohaemorrhagic E. coli 47 Clostridium tetani 47 Helicobacter 47 Lactobacilli 47 Bacillus cereus 47 parasite transmitted 47 serratia 47 staphylococcal 47 LCMV 47 Cryptococcus neoformans 47 ebola virus 47 Hookworm 47 Culicoides 47 Trichloroethylene TCE 47 Coxiella burnetii 47 alga 47 TB germ 47 simazine 47 Trypanosoma 47 Bartonella 47 bacterial strain 47 Salmonella Listeria 47 amnesic shellfish poisoning 47 MRSA bacterium 47 Phytophthora infestans 47 serotype #A 47 vibriosis 47 H. pylori 47 Acinetobacter baumannii 47 measles virus 47 Bti 47 Bacillus subtilis 47 salmonella enteritidis 47 neisseria 47 ultraviolet disinfection 47 piperonyl butoxide 47 B. pseudomallei 47 salmonella typhimurium 47 causes Legionnaires disease 47 Human Papilloma Virus 47 carbaryl 47 chlorinated solvent 47 melioidosis 47 Typhoid fever 47 hantavirus infection 47 helminth infections 47 plutonium americium 47 Hexavalent chromium 47 Helicobacter pylori H. pylori 47 kanamycin 47 Nonoxynol 9 47 Nitrates 47 fungi spores 47 salmonella infection 47 chytrid fungus 47 infective agent 47 Yersinia enterocolitica 47 S aureus 47 Rotavirus 47 #,# dioxane 47 b Hib 47 Listeria Monocytogenes 47 Mycobacterium 47 M. leprae 47 bacteria Pseudomonas 47 zebra mussel 47 celled parasite 47 Toxoplasma 47 chlorinate 47 groundwater contaminant 47 parasitic disease 47 vancomycin resistant Staphylococcus aureus 47 bacterial pathogens 47 microbiological contaminants 47 Streptococcus bacteria 47 etiological agent 47 contaminant 47 biting midge 47 dormant spores 47 lungworm 47 Faecal 47 bacteria Neisseria meningitidis 47 spectrum beta lactamases 47 RMSF 47 pyogenes 47 Pseudomonas syringae 47 anthrax Bacillus anthracis 47 Citroxin 47 chlorinated 47 waterborne parasites 47 SARS CoV 47 virucidal 47 ectoparasites 47 orthophosphate 47 transmissible spongiform encephalopathy TSE 47 mosquito larvae 47 rhinovirus infections 47 toxins secreted 47 superantigens 46 Mycoplasma 46 nosocomial infection 46 Latent TB 46 zoonosis 46 Fecal coliforms 46 haloacetic acids 46 disease vCJD 46 mosquito vector 46 distemper virus 46 Penicillium 46 Disinfecting 46 Pasteurella multocida 46 cysticercosis 46 contagious bacterial 46 nosocomial 46 campylobacter 46 sewage effluent 46 lymphocytic choriomeningitis virus LCMV 46 IBR BVD 46 methicillin resistant staph 46 pinworms 46 Toxocara 46 pathogenic strain 46 Pyrethroids 46 Carbofuran 46 hemolytic uremic syndrome HUS 46 pseudomonas bacteria 46 HAV infection 46 antiseptic chlorhexidine 46 N. gonorrhoeae 46 dioxin TCDD 46 virulent pathogen 46 Bluetongue virus 46 Enteroviruses 46 diarrhea BVD 46 Pyrethrins 46 Lyngbya 46 rhinovirus 46 Aedes Aegypti 46 tickborne 46 Giardia parasite 46 Bovine tuberculosis 46 low pathogenic strains 46 H7 strain 46 bovis 46 flavivirus 46 inactivate viruses 46 Pseudomonas aeruginosa bacterium 46 EHEC 46 cow rumen Naczi 46 E. coli Escherichia coli 46 Bacteriophages 46 fecal coliform 46 cholera toxin 46 Staph Aureus 46 noninfectious 46 cepacia 46 C. gattii 46 mosquitofish 46 nonbacterial 46 Epstein Barr virus EBV 46 canine distemper virus 46 Candida infection 46 itch mite 46 Herpes virus 46 Clostridium difficile bacteria 46 salmonella serotype 46 USA# [002] 46 allergenic proteins 46 antibiotic resistant strain 46 parasite Plasmodium falciparum 46 columnaris 46 Clostridium difficile 46 Candida yeast 46 glanders 46 Scabies 46 spirochetes 46 bacteraemia 46 chlortetracycline 46 infectious prion proteins 46 S. pyogenes 46 myiasis 46 Streptococcus salivarius 46 TB germs 46 fungus Aspergillus 46 infected mosquito 46 oxacillin 46 veligers 46 enteric fever 46 Zebra Mussel 46 rodenticides 46 foodborne bacterial 46 cholera bacteria 46 varicella zoster virus VZV 46 toxocariasis 46 acanthamoeba 46 campylobacter jejuni 46 Antibiotic resistant bacteria 46 bioaerosols 46 zebra mussel infestation 46 streptococcal bacteria 46 shigella 46 infectious gastroenteritis 46 parasites 46 PCV1 46 Lactobacillus 46 Staphylococcal 46 Serratia 46 blinding trachoma 46 bacillary dysentery 46 Methicillin Resistant 46 benzalkonium chloride 46 avian botulism 46 bacteria Clostridium botulinum 46 Listeria Salmonella 46 Noro Virus 46 trematodes 46 pesticide atrazine 46 Bacterial contamination 46 Culex mosquitoes 46 algae 46 Falciparum 46 microbial organisms 46 Chlamydophila psittaci 46 aureus infections 46 gentian violet 46 Genital herpes 46 foodborne 46 Mycobacterium leprae 46 virus subtype 46 antibiotic resistant MRSA 46 multidrug resistant strains 46 Bt toxin 46 brodifacoum 46 histolytica 46 anaplasmosis 46 oral secretions 46 Stenotrophomonas maltophilia 46 ESBL 46 Anopheles mosquitoes 46 Pseudomonas Aeruginosa 46 clostridia 46 endogenous retroviruses 46 PFCAs 46 blacklegged ticks 46 bulgaricus 46 vesicular stomatitis virus 46 Bacillus thuringiensis israelensis 46 uraemic syndrome HUS 46 KHV 46 west nile 46 bacterium Mycobacterium tuberculosis 46 typhimurium 46 campylobacteriosis 46 tapeworm eggs 46 meningitides 46 anthrax bacillus 46 methoprene 46 shiga toxin producing 46 Histoplasma capsulatum 46 C. difficile spores 46 Streptococcus pneumonia 46 haemorrhagic fever 46 bacteria enterococci