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Provisional data concerning the reported occurrence of notifiable diseases are published weekly in MMWR. After each reporting year, staff in state health departments finalize reports of cases for that year with local or county health departments and reconcile the data with reports previously sent to CDC throughout the year. These data are compiled in final form in the MMWR Summary of Notifiable Diseases, United States.
Notifiable disease reports are the authoritative and archival counts of cases. They must be approved by the appropriate epidemiologist from each submitting state or territory before being published in the MMWR Summary of Notifiable Diseases, United States. Although useful for detailed epidemiologic analyses, data published in MMWR Surveillance Summaries or other surveillance reports produced by CDC programs might not agree exactly with data reported in the annual summary because of differences in the timing of reports, the source of the data, and the case definitions.
Data in the MMWR Summary of Notifiable Diseases, United States were derived primarily from reports transmitted to the Division of Public Health Surveillance and Informatics, Epidemiology Program Office, CDC, from health departments in the 50 states, five territories, New York City, and the District of Columbia through the National Electronic Telecommunications System for Surveillance (NETSS). More information regarding NETSS and notifiable diseases, including case definitions for these conditions, is available on the Internet at http://www.cdc.gov/ncphi/disss/phs.htm. Policies for reporting notifiable disease cases can vary by disease or reporting jurisdiction, depending on case status classification (i.e., confirmed, probable, or suspect).
Final data for selected diseases (presented in Parts 1, 2, and 3) are from the surveillance records of the CDC programs listed below. Requests for further information regarding these data should be directed to the appropriate program.National Center for Health Statistics (NCHS)
Office of Vital and Health Statistics Systems (deaths from selected notifiable diseases)
National Center for Infectious Diseases (NCID)
Division of Bacterial and Mycotic Diseases (toxic-shock syndrome; Streptococcal disease, invasive, group A; Streptococcal toxic-shock syndrome; and laboratory data regarding botulism, Escherichia coli O157:H7, salmonellosis, and shigellosis).
Division of Vector-Borne Infectious Diseases (laboratory data regarding arboviral encephalitis).
Division of Viral and Rickettsial Diseases (animal rabies; Hantavirus pulmonary syndrome).
National Center for HIV, STD, and TB Prevention (NCHSTP)
Division of HIV/AIDS Prevention –Surveillance and Epidemiology (acquired immunodeficiency syndrome [AIDS]).
Division of Sexually Transmitted Diseases Prevention (chancroid, chlamydia, gonorrhea, and syphilis).
Division of Tuberculosis Elimination (tuberculosis).
National Immunization Program (NIP)
Epidemiology and Surveillance Division (poliomyelitis).
Disease totals for the United States, unless otherwise stated, do not include data for American Samoa, Guam, Puerto Rico, the Virgin Islands, or the Commonwealth of the Northern Mariana Islands (CNMI). Disease totals from American Samoa, CNMI, and the Virgin Islands were unavailable for 1998.
Population estimates for the states are from the July 1, 1998, estimates from the Bureau of the Census* (Internet release number ST-98-1. December 31, 1998). Population numbers for territories are 1997 estimates from the Bureau of the Census (Press release numbers CB98-54 and CB98-80). Population numbers used to calculate rates for age and sex are from July 1, 1998, estimates from the Bureau of Census (Internet release. June 15, 1999). More information regarding census estimates is available at http://www.census.gov. Rates in the MMWR Summary of Notifiable Diseases, United States are presented as incidence rates per 100,000 population, based on data for the U.S. total-resident population. However, population data from states in which diseases were not notifiable or disease data were not available were excluded from rate calculations.
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