The Short List of Pathogens, Diseases, and Treatments Sorted by Pathogen Type Bacteria Etiological Agent Bacillus anthracis Disease Anthrax Bacteria Bordetella pertussis Whooping cough Bacteria Borrelia burgdorferi Lyme disease, relapsing fever Bacteria Campylobacter jejuni Dysentery, Campylobacter Bacteria Chlamydophila pneumoniae Pneumonia (Chlamydial) Bacteria Chlamydia trachomatis Urethritis (nongonococcal), Pelvic inflammatory disease (PID) Bacteria Clostridium botulinum Botulism; wound botulism Bacteria Clostridium difficile Bacteria Clostridium perfringens Gas gangrene, C. perfringens gastroenteritis Bacteria Clostridium tetani Tetanus Bacteria Corynebacterium diptheriae Diptheria Bacteria Coxiella burnetti Q Fever Tetracycline Bacteria Ehrlichia spp. Ehrlichiosis Doxycycline Diarrhea, nosocomial Treatment Ciprofloxacin or doxycycline plus additional agents; vaccine available but requires a series of six injections over 18 months. Erythromycin, clarithromycin better tolerated A tetracycline (doxycycline) or semisynthetic penicillin (amoxicillin), cephalosporin (ceftriaxone or cefotaxime) for late complications Usually self-limiting; oral rehydration Cephalosporin (Rocephin) +/- macrolide (clarithromycin or azithromycin) or fluroquinolone (ciprofloxacin) + tetracycline (doxycycline) Cephalosporin (Rocephin) +/- macrolide (clarithromycin or azithromycin) or fluroquinolone (ciprofloxacin) + tetracycline (doxycycline) Antitoxin, antibiotics of almost no use because toxin is preformed Metronidazole (Flagyl) Penicillin with antitoxin; surgical removal of necrotic tissue and amputation; may treat with hyperbaric oxygen. Antitoxin, (Tetanus Immune Globulin, TIG) penicillin Pencillin and erythromycin in conjunction with antitoxin Bacteria Enterobacter spp. Bacteria Enterococcus spp. (faecalis, faecium) Bacteria Escherichia coli Bacteria Haemophilus influenzae Bacteria Helicobacter pylori Bacteria Bacteria Bacteria Bacteria Bacteria Bacteria Bacteria Nosocomial pneumonia and wound infections. Most common cause of surgical wound infections, nosocomial sepsis Gastroenteritis, enterotoxigenic, enteroinvasive, and enterohemorrhagic; Traveler’s diarrhea/Montezuma’s revenge. Nosocomial pneumonia and wound infections. Meningitis, bacteremia, epiglottitis, or pneumonia. * Nafcillin + gentamicin or Nafcillin + ciprofloxacin Usually self-limiting; oral rehydration; if drugs required see * Hib vaccine available; Rifampin; chloramphenicol or ampicillin, both in serious infections; second generation cephalosporins Penicillin, broad spectrum antibiotics Ulcer (Gastric and duodenal), stomach cancer Klebsiella pneumoniae Pneumonia, most common cause of * surgical wound infections Legionella Legionellosis (pneumonia) Erythromycin pneumophila Mycobacterium leprae Leprosy (Hansen's disease) Dapsone, rifampin, and clofazimine in combination; vaccine available as adjunct to chemotherapy; BCG vaccine is also somewhat protective Mycobacterium Tuberculosis Isoniazid, rifampin, ethambutol tuberculosis Mycoplasma Pneumonia (Mycoplasmal ) Cephalosporin (Rocephin) +/- macrolide pneumonia (clarithromycin or azithromycin) or fluroquinolone (ciprofloxacin) + tetracycline (doxycycline) Neisseriae gonorrhoea Gonorrhea Ceftriaxone (Rocephin, a cephalosporin) (gonococcus) Neisseriae meningitidis Meningitis (meningococcal) Penicillin or semisynthetic penicillin (meningococcus) (Ampicillin), cephalosporin (ceftriaxone Rocephin), chloramphenicol for patients allergic to penicillin Bacteria Pseudomonas aeruginosa Bacteria Rickettsia rickettsii Nosocomial pneumonia and wound * infections, dermatitis, otitis externa, urinary tract infections, burns; can cause septicemia, abscesses, and meningitis. Rocky Mountain spotted fever Tetracycline (doxycycline), chloramphenicol Bacteria Salmonella enterica Food Poisoning (Salmonellosis) Bacteria Salmonella typhi Typhoid fever Bacteria Shigella sonnei Dysentery (Shigellosis) Bacteria Staphylococcus aureus Most common cause of ** (coagulase +, beta nosocomial pneumonia, MRSA accounts for 52.3% of S. aureus hemolytic) nosocomial infections. Also causes boils (furuncles), carbuncles (abscesses), acute bacterial endocarditis, folliculitis, food poisoning, impetigo, otitis media, pimples, scalded skin syndrome, sties, and toxic shock syndrome. Staphylococcus Most important cause of nosocomial ** epidermidis (coagulase sepsis. May also cause acute -, no beta hemolysis) bacterial endocarditis. Streptococcus Pneumonia (pneumococcal), ** pneumoniae Meningitis (pneumococcal), otitis media; Nosocomial pneumonia and wound infections. Bacteria Bacteria Antibiotics not useful; oral rehdyration therapy Ceftriaxone (Rocephin) or other 3rd generation cephalosporins Usually self-limiting Bacteria Streptococcus pyogenes (group A beta-hemolytic streptococci) Bacteria Treponema pallidum Strep throat (may be accompanied ** by scarlet fever or rheumatic fever), impetigo, otitis media, and erysipelas.) Also causes pneumonia, bacteremia in association with cutaneous infection, deep soft-tissue infection cellulitis, myositis, necrotizing fascitis, meningitis, peritonitis, osteomyelitis, septic arthritis, puerperal fever, neonatal sepsis, and nonfocal bacteremia Syphilis ** Bacteria Vibrio cholerae Gastroenteritis, Vibrio Non-O:1 Bacteria Fungus Yersinia pestis Aspergillus flavus Fungus Blastomyces dermatidis Fungus Candida albicans Fungus Coccidiodies immitis Fungus Cryptococcus neoformans Tetracycline (doxycycline); oral rehydration more important Bubonic Plague Streptomycin Aflatoxin poisoning may contribute Aflatoxin: feeding large quantities of an to cirrhosis and liver cancer, also adsorbent such as activated charcoal may may cause serious respiratory be used. Antioxidants and inducers of infections. cytochrome P450 may give a protective effect. Respiratory infections: Amphotericin B, ketoconazole or fluconazole (Diflucan). Blastomycosis - respiratory infection Amphotericin B resembles bacterial pneumonia, may spread from lungs, causing severe abscesses. Opportunistic. Usually affects Miconazole, clotrimazole, and nystatin mucous membranes or moist areas (topically); ketoconazole or fluconazole of skin. Thrush is infection of oral (Diflucan) orally. mucosae. Vaginitis is infection of vaginal mucosae. Coccidioidomycosis - progressive Amphotericin B disease resembles T.B. Cryptococcosis - severe meningitis Amphotericin B and flucytosine in combination Fungus Histoplasma capsulatum Helminth Helminth Ascaris lumbricoides Echinonococcus granulosus Necator americanus Hookworms Schistosoma sp. Schistomiasis Taenia saginata (beef) Tapeworm infection Prion Spongiform encephalitis Cryptosporidium Dysentery: Cryptosporidiosis parvum Entamoeba histoltica Dysentery: Amoebiasis Helminth Helminth Helminth Prion Protozoa Protozoa Histoplasmosis - respiratory, usually Amphotericin B subclinical, resembles T.B. if progressive Ascariasis Mebendazole Hydatid disease Surgical removal, albendazole to kill cysts Dysentery: Giardiasis Protozoa Giardia intestinalis (lamblia) Leshmania sp. Protozoa Naegleria fowleri Meningoencephalitis Protozoa Plasmodium sp. Malaria (P.falciparum, P. vivax, P. malariae, P. ovale) Protozoa Toxoplasma gondii Protozoa Trichomonas vaginalis Trichomoniasis (vaginitis) Protozoa Leshmaniasis Toxoplasmosis Mebendazole Praziquantel and oxamniquine. Praziquantel and albendazole None Oral rehydration Metronidazole (Flagyl) plus iodoquinol Metronidazole (Flagyl) or quinacrine hydrochloride Drugs containing the toxic metal antimony, amphotericin B, recently miltefosine. Fatality rate is nearly 100%; Diagnosis is typically made at autopsy. Quinine and derivatives chloroquine, primaquine, and mefloquine. Malarone is a new combination drug, as effective as mefloquine and less toxic. Increasing use of artemisinin. Pyrimethamine with sulfadimiazine. Doesn’t affect the chronic bradyzoite statge and is toxic. Tinidazole or metronidazole (Flagyl) Protozoa Trypanosoma brucei rhodesiense, T.b. gambiense Protozoa Trypanosoma cruzi Virus African trypanosomiasis Chagas’ disease, American trypanosomiasis Ebola virus (a filovirus) Hemorrhagic fever, viral Suramin and pentamidine moderately effective, don’t alter disease’s course. Melarsoprol alters course of disease but is very toxic. Eflornithine, introduced in 1992, is so effective even late that it is referred to as the resurrection drug; more effective against T. b. gambiense, melarsoprol still recommended for T.b. rhodesiense Difficult to treat due to low efficacy and toxicity of drugs available. None Virus Epstein-Barr virus (HHV-4) Virus Hepatitis A virus Infectious mononucleosis, Burkitt’s None lymphoma, nasopharyngeal carcinoma Hepatitis, infectious Vaccine avaliable Virus Hepatitis C virus Hepatitis, serum Virus Herpes simplex 1 Cold Sores, may cause genital Acyclovir, gangcyclovir may modify herpes depending on transmission symptoms Virus AIDS Anti-retrovirals (nucleoside/nucleotide analogs - AZT) and protease inhibitors Virus Human Immunodeficiency virus (HIV) Influenza virus Neuraminidase inhibitors: Oseltamivir phosphate(Tamiflu), Zanamivir(Relenza); Uncoating inhibitors: Amantadine, Zimantadine Virus Lassa fever virus Virus Marburg virus (a filovirus) Measles virus Influenza: Types A, B, and C. Segmented genome allows extensive recombination leading to antigenic changes. Transmitted by inhalation, infects respiratory mucosa, allows secondary bacterial infections to occur after epithelial denudation. Hemorrhagic fever, viral; Lassa Fever Hemorrhagic fever, viral Red measles (rubeola), Subacute sclerosing panencephalitis Vaccination provides effective long-term immunity. Virus Virus Papillomavirus spp. Warts, including genital warts Virus Poliovirus Poliomyelitis Virus Rabies Virus Virus Rabies virus (Lyssavirus) Rhinovirus Rotavirus Virus Rubivirus Rubella (German Measles), Congenital rubella syndrome Virus Varicella zoster (HHV- Chicken Pox (varicella), Shingles 3) (herpes-zoster) Virus Variola major Virus Yellow Fever Virus (Flavivirus, an arbovirus) Common cold Gastroenteritis Smallpox, (pox – vesicopustular skin eruptions). Hemorrhagic fever, viral; Yellow Fever May be removed by liquid nitrogen, cryotherapy, electrodesiccation, acids, or lasers. **Vaccination Vaccine available, treatment includes injection with immune globulin and vaccine. None None None, vaccine available. Acyclovir for immunocompromised patients, vaccine available. None Vaccine is now available. * Multi-drug Piperacillin/tazobactam + tobramycin (penicillin + aminoglycoside) or combinations for: Clindamycin + ciprofloxacin (lincosamide - like a macrolide + fluoroquinolone) Enterobacter, E.coli, or Klebsiella pneumoniae, Ceftazidime or Imipenem +/- aminoglycoside (cephalosporin or penicillin +/Pseudomonas aminoglycoside) aeruginosa ** Tx options for (drug resistance) for: Staphylococcus aureus, Polio vaccines *** Penicillin or semisynthetic penicillin (nafcillin, oxycillin); cephalosporins (Rocephin) or macrolides (Azithromycin, Clarithromycin [Biaxin], Telithromycin [Ketek]); vancomycin for penicillin-resistant strains, synercid for vancomycin resistant staphylococcus, zyvox for synercid resistance. Salk vaccine developed in 1954 is a formalin inactivated vaccine (IPV – inactivated polio vaccine), requires repeated injection, may be as high as 90% effective. Sabin vaccine introduced in 1963 contains 3 living attenuated strains of the virus, taken orally (OPV – oral polio vaccine); immunity resembles natural immunity but attenuated strains may revert to virulence.