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Class A Diseases:
Diseases of major public health concern because of the severity of disease or potential for epidemic spread - report by telephone immediately upon recognition that a case, a suspected case, or a positive laboratory result exists
Anthrax |
Plague |
Botulism, foodborne |
Rabies, human |
Cholera |
Rubella (not congenital) |
Diphtheria |
Severe acute respiratory syndrome (SARS) |
Influenza A - novel virus |
Smallpox |
Measles |
Tularemia |
Meningococcal disease |
Viral hemorrhagic fever (VHF), including Ebola virus disease, Lassa fever, Marburg hemorrhagic fever, and Crimean-Congo hemorrhagic fever |
MERS CoV |
Yellow fever |
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Any unexpected pattern of cases, suspected cases, deaths or increased incidence of any other disease of major public health concern, because of the severity of disease or potential for epidemic spread, which may indicate a newly recognized infectious agent, outbreak, epidemic, related public health hazard or act of bioterrorism. |
Class B Diseases:
Diseases of public health concern needing timely response because of potential for epidemic spread - report by the end of the next business day after the existence of a case, a suspected case, or a positive laboratory result is known
Amebiasis |
Leptospirosis |
Arboviral neuroinvasive and non-neuroinvasive disease:
• Chikungunya virus infection
• Eastern equine encephalitis virus disease
• LaCrosse virus disease (other California serogroup virus disease)
• Powassan virus disease
• St. Louis encephalitis virus disease
• Zika Virus Infection
• West Nile virus infection
• Western equine encephalitis virus disease
• Other arthropod-borne diseases
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Listeriosis |
Babesiosis |
Lyme disease |
Botulism, infant |
Malaria |
Botulism, wound |
Meningitis, aseptic (viral) |
Brucellosis |
Meningitis, bacterial |
Campylobacteriosis |
Mumps |
Carbapenemase- producing carbapenem-resistant
Enterobacteriaceae (CP-CRE)
CP-CRE Enterobacter spp.
CP-CRE Escherichia coli
CP-CRE Klebsiella spp.
CP-CRE other |
Pertussis |
Chancroid |
Poliomyelitis (including vaccine-associated cases) |
Chlamydia infections (urethritis, epididymitis, cervicitis, pelvic inflammatory disease, neonatal conjunctivitis, pneumonia and lymphogranuloma venereum (LGV)) |
Psittacosis |
Coccidioidomycosis |
Q fever |
Creutzfeldt-Jakob disease (CJD) |
Rubella (congenital) |
Cryptosporidiosis |
Salmonellosis |
Cyclosporiasis |
Shigellosis |
Dengue |
Spotted Fever Rickettsiosis, including Rocky Mountain spotted fever |
E. coli O157:H7 & other enterohemorrhagic (shiga toxin-producing) E. coli |
Staphylococcus aureus, with resistance or intermediate resistance to Vancomycin (VRSA, VISA) |
Ehrlichiosis/Anaplasmosis |
Streptococcal disease, group A, invasive (IGAS) |
Giardiasis |
Streptococcal disease, group B, in newborn |
Gonococcal infections (urethritis, cervicitis, pelvic, inflammatory disase, pharyngitis, arthritis, endocarditis, meningitis and neonatal conjunctivitis) |
Streptococcal toxic shock syndrome (STSS) |
Haemophilus influenzae (invasive disease) |
Streptococcus pneumoniae, invasive disease (ISP) |
Hantavirus |
Syphilis |
Hemolytic uremic syndrome (HUS) |
Tetanus |
Hepatitis A |
Toxic Shock Syndrome (TSS) |
Hepatitis B, non-perinatal |
Trichinosis |
Hepatitis B, perinatal |
Tuberculosis, including multi-drug resistant tuberculosis (MDR-TB) |
Hepatitis C, non perinatal |
Typhoid fever |
Hepatitis C, perinatal |
Varicella |
Hepatitis D (delta hepatitis) |
Vibriosis |
Hepatitis E |
Yersiniosis |
Influenza-associated hospitalization |
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Influenza-associated pediatric mortality |
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Legionnaires' disease |
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Leprosy (Hansen disease) |
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Class C Diseases:
Report an outbreak, unusual incidence, or epidemic (e.g., histoplasmosis, pediculosis, scabies, staphylococcal infections) by the end of the next business day
Outbreaks:
Community |
Healthcare-associated |
Waterborne |
Foodborne |
Institutional |
Zoonotic |
Find general reporting forms and instructions on the Reports page.
For a specific disease-related form, explore our comprehensive Disease page.