|
Agent |
Incubation Period |
Diagnostic Specimens and Procedures |
Isolation Precautions |
Treatment |
Postexposure Prophylaxisa |
Comments |
|---|---|---|---|---|---|---|
|
Alphaviruses (VEE, EEE, and WEE) |
2-10 days |
Cerebrospinal fluid (CSF) for viral isolation, antibody detection in CSF and acute and convalescent serum |
Standard; respiratory precautions for WEE virus |
Supportive |
Protection from mosquito vectors |
|
|
Anthrax |
1-60 days |
Gram stain of buffy coat, CSF, pleural fluid, swab of skin lesion; culture of blood, CSF, pleural fluid, skin biopsy |
Standard; contact for skin lesions |
Ciprofloxacinb or doxycyclinec; combine with one or two additional antimicrobial agents for inhalational, gastrointestinal (GI), or oropharyngeal diseased |
Ciprofloxacinb, doxycyclinec, or amoxicilline; anthrax vaccine |
Additional antimicrobial agents to be used for inhalational, GI, or oropharyngeal disease include rifampin, vancomycin, penicillin, ampicillin, chloramphenicol, imipenem, clindamycin, and clarithromycin |
|
Botulism |
Foodborne: 2 hr-8 days Inhalational: 24-72 hr |
Toxin detection from serum, feces, enema fluid, gastric fluid, vomitus, or suspected food samples; culture of feces or gastric sections; nerve conduction testing |
Standard |
Supportive care; mechanical ventilation and parenteral nutrition may be required; equine botulism antitoxin given as soon as possible (CDC)f |
Type-specific antitoxin should be administered when possible; antitoxin prevents additional nerve damage but does not reverse existing paralysis |
|
|
Brucellosis |
5-60 days |
Culture of blood or bone marrow; acute and convalescent serum for antibody testing |
Standard; contact for draining skin lesions |
Doxycyclinec and rifampin; if younger than 8 yr old, use TMP-SMX |
Doxycyclinec and rifampin |
TMP-SMX may substitute for rifampin with doxycycline |
|
Plague |
2-4 days |
Culture or fluorescent antibody staining of blood, sputum, lymph node aspirate |
Droplet |
Streptomycin sulfate or gentamicin sulfate; doxycyclinec or tetracyclinec |
TMP-SMX is an alternative; chloramphenicol for meningitis |
|
|
Q fever |
10-40 days |
Acute and convalescent serum samples |
Standard |
Chloramphenicol is an alternative for treatment or prophylaxis |
||
|
Smallpox |
7-19 days |
Culture of pharyngeal swab of skin lesions |
Airborne, contact |
Supportive care |
Vaccine if administered within 4 days |
|
|
Staphylococcal enterotoxin B |
3-12 hr |
Serum, urine, and respiratory secretions for toxin; acute and convalescent serum for antibodies |
Standard |
Supportive care |
None available |
|
|
Ricin |
4-8 hr |
Serum and/or respiratory secretions for enzyme immunoassay |
Standard |
Supportive care; gastric lavage and cathartics if toxin is ingested |
Protective mask |
|
|
Viral hemorrhagic fevers |
6-17 days |
Culture and/or antigen detection of blood and other body tissuesg; serum for acute and convalescent antibody detection |
Standard, droplet, and contact precautionsh |
Ribavarin IV for Lassa fever; plasma from convalescent patients for Argentinean hemorrhagic fever; supportive care |
Notes: EEE = Eastern equine encephalitis; VEE = Venezuelan equine encephalitis; WEE = Western equine encephalitis.
a Prophylaxis should be administered only after consultation
with public health officials and only in situations in which exposure is
highly likely. The duration of prophylaxis has not been determined for
most agents.
b If susceptibility is unknown or indicates resistance
to other agents. Ciprofloxacin is not licensed by the Food and Drug Administration (FDA) for use in people
younger than 18 yr but is indicated for potentially serious or life-threatening
infections.
c Tetracyclines, including doxycycline, are not approved
by the FDA for this indication and are usually contraindicated for children
younger than 8 yr, but treatment is warranted for selected serious infections.
d Treatment should be administered parenterally initially
but may be changed to oral therapy for cutaneous infection without dissemination.
e Amoxicillin may be used as prophylaxis only if the organism
is known to be susceptible.
f Botulism antitoxin must be obtained from the Centers for Disease Control and Prevention (CDC) Drug
Service, 404-639-3670 (weekdays, 8 am to 4:30 pm) or 404-639-2888 (weekends,
nights, holidays).
g Isolation should be attempted only under Biosafety Level-4
conditions.
h Because of the risk of nosocomial transmission, the
State health department and the CDC should be contacted for specific advice
about management and diagnosis of suspected cases.