:: Bacteria ::
- rigid, thick-walled cells
- free-living (extracellular bacteria)
- Gram-positive
- cocci
- Streptococcus
- group A S. - S. pyogenes
- group B S. - S. agalactiae
- group D S.
- enterococcus : E. faecalis | E. faecium
- non-enterococcus : S. bovis | S. equinus
- S. viridans
- S. salivarius | S. sanguis | S. mitis | S. mutans
- S. intermedius | S. constellatus | S. angionosus (S. intermedius group)
- S. pneumoniae (pneumococcus)
- Staphylococcus
- S. aureus
- S. epidermidis
- S. saprophyticus
- spore-forming bacilli
- aerobic
- anaerobic
- Clostridium
- C. botulinum
- C. difficile
- C. perfringens
- C. tetani
- non-spore-forming bacilli
- Gram-negative
- cocci
- Neisseria
- N. meningitidis (meningococcus)
- N. gonorrhoeae (gonococcus)
- bacilli
- facultative
- straight
- respiratory organism
- Haemophilus
- H. influenzae
- H. ducreyi
- H. vaginalis (Gardnerella vaginalis)
- Legionella pneumonphila
- Bordetella pertussis
- zoonotic organism
- Brucella
- B. melitensis
- B. suis
- B. abortus
- B. canis
- Francisella tularensis
- Yersinia
- Y. pestis
- Y. enterocolitica
- Y. pseudotuberculosis
- Pasteurella multocida
- enteric organism - Enterobacteriaceae
- Escherichia coli [both within & outside enteric tract]
- Salmonella
- S. typhi | S. paratyphi
- S. choleraesuis
- S. typhimurium | S. enteritidis
- Shigella [within enteric tract]
- Klebsiella pneumoniae [outside enteric tract]
- Enterobacter cloacae
- Serratia marcescens
- Proteus mirabilis
- Providencia rettgeri
- Morganella morganii
- curved - Vibrionaceae
- Vibrio
- V. cholerae
- V. parahaemolyticus
- V. vulnificus
- Campylobacter
- C. jejuni
- C. intestinalis (=fetus)
- Helicobacter(=Campylobacter) pylori
- aerobic - Pseudomonas
- Pseudomonas
- P. aeruginosa
- P. cepacia
- P. maltophilia
- anaerobic - Bacteroidaceae
- Bacteroides
- B. fragilis
- B. melanogenicus
- Fusobacterium
- acid-fast
- Mycobacterium
- M. tuberculosis
- M. bovis
- M. kansasii | M. marinum : group Ⅰ(photochromogen)
- M. scrofulaceum : group Ⅱ(scotochromogen)
- M. avium-intracellulare complex : group Ⅲ(nonchromogen)
- M. fortuitum-chelonei complex | M. smegmatis : group Ⅳ(rapidly growing mycobacteria)
- M. leprae
- non-free-living (obligate intracellular bacteria)
- Chlamydia
- C. trachomatis
- C. psittaci
- C. pneumoniae
- Rickettsia
- R. rickettsii
- R. akari
- R. prowazekii
- R. typhi
- R. tsutsugamushi
- flexible, thin-walled cells (spirochetes)
- Treponema
- T. pallidum
- T. pallidum subspecies - endemicum | pertenue | carateum
- Borrelia
- B. burgdorferi
- B. recurrentis
- B. hermsii
- Leptospira interrogans
- wall-less cells
- Mycoplasma
- M. pneumoniae
- Ureaplasma urealyticum (tiny strain mycoplasma)
:: Virus ::
- (+) ssRNA - icosahedral
- enveloped
- nonsegmented
- Flaviviridae
- Togaviridae
- Coronaviridae
- naked
- nonsegmented
- Picornaviridae
- Caliciviridae
- (-) ssRNA - helical
- enveloped
- nonsegmented
- Paramyxoviridae
- Rhabdoviridae
- Filoviridae
- Deltaviridae
- segmented
- Orthomyxoviridae
- Bunyaviridae
- Arenaviridae
- dsRNA - icosahedral
- (+) ssRNA - icosahedral
- enveloped
- segmented
- linear
- Retroviridae
- unnamed genus
- human T-cell leukemia virus 1 (HTLV-1)
- human T-cell leukemia virus 2 (HTLV-2)
- lentivirus
- human immunodeficiency virus 1 (HIV-1)
- human immunodeficiency virus 2 (HIV-2)
- ssDNA - icosahedral
- dsDNA - icosahedral
- enveloped
- linear
- Herpesviridae
- alphaherpesvirinae
- simplexvirus
- herpes simplex virus type 1 (human herpesvirus 1)
- herpes simplex virus type 2 (human herpesvirus 2)
- varicellovirus
- varicella-zoster virus (human herpesvirus 3)
- betaherpesvirinae
- cytomegalovirus
- cytomegalovirus (human herpesvirus 5)
- roseolovirus
- human herpesvirus 6
- human herpesvirus 7
- gammaherpesvirinae
- lymphocryptovirus
- epstein-barr virus (human herpesvirus 4)
- rhadinovirus
- kaposi's sarcoma-associated herpesvirus
(human herpesvirus 8)
- Poxviridae
- orthopoxvirus
- smallpox virus (variola virus)
- vaccina virus
- monkeypox virus
- cowpox virus
- parapoxvirus
- orf virus
- pseudocowpox virus
- yatapoxvirus
- yabapox virus
- tanapox virus
- molluscipoxvirus
- molluscum contagiosum virus
- circular
- naked
- linear
- circular
- Papovaviridae
- papillomavirus
- polyomavirus
- BK virus
- JC virus
- SV40 virus
:: Fungi ::
- cutaneous mycose
- Trichophyton | Microsporum | Epidermophyton - dermatophytes
- Malassezia furfur
- Cladosporium werneckii
- subcutaneous mycose
- Sporothrix schenckii
- Phialophora | Cladosporium | Fonsecaea
- Petriellidium madurella
- systemic mycose
- Coccidioides immitis
- Histoplasma capsulatum
- Blastomyces dermatitidis
- Paracoccidioides brasiliensis
- opportunistic mycose
- Candida albicans
- Cryptococcus neoformans
- Aspergillus
- A. fumigatus
- A. flavus
- A. niger
- Mucor rhizopus
- Pneumocystis carinii
:: Protozoa ::
- intestinal protozoa
- amebas (sarcodina)
- sporozoans (sporozoa)
- flagellates (mastigophora)
- urogenital protozoa
- flagellates (mastigophora)
- blood & tissue protozoa
- sporozoans (sporozoa)
- Plasmodium
- P. vivax
- P. ovale
- P. malariae
- P. falciparum
- Toxoplasma gondii
- flagellates (mastigophora)
- Trypanosoma
- T. cruzi
- T. brucei gambiense
- T. brucei rhodesiense
- Leishmania
- L. donovani
- L. tropica
- L. mexicana
- L. braziliensis
- fungus
:: Metazoa (Helminths, Worms) ::
- platyhelminthes (flatworms)
- trematoda (flukes)
- Schistosoma (blood fluke)
- S. mansoni
- S. japonicum
- S. haematobium
- Clonorchis sinensis (Asian liver fluke)
- Paragonimus westermani (lung fluke)
- cestoda (tapeworms)
- Taenia
- T. solium (pork tapeworm)
- T. saginata (beef tapeworm)
- Diphyllobothrium latum (fish tapeworm)
- Echinococcus
- E. granulosus (dog tapeworm)
- E. multilocularis
- Hymenolepis nana
- Dipylidium caninum
- nemathelminthes (roundworms)
- intestinal nematodes
- Enterobius vermicularis (pinworm)
- Trichuris trichiura (whipworm)
- Ascaris lumbricoides (roundworm)
- Ancylostoma duodenale | Necator americanus (hookworm)
- Strongyloides stercoralis (threadworm)
- Trichinella spiralis
- tissue nematodes
- Wuchereria bancrofti | Brugia malayi
- Onchocerca volvulus
- Loa loa
- Dracunculus medinensis (guinea fire worm)
- nematodes whose larvae cause disease
- Toxocara canis
- Ancylostoma
- A. caninum
- A. brazilience
- Angiostrongylus cantonensis
- Anisakis simplex
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