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Summary of Notifiable Diseases
United States 2001
Preface
The MMWR Summary of Notifiable Diseases, United States,
2001 contains, in tabular and graphic form, the official statistics
for the reported occurrence of nationally notifiable diseases in the United
States for 2001. These statistics are collected and compiled from reports
sent by state health departments to the National Notifiable Diseases Surveillance
System (NNDSS), which is operated by CDC in collaboration with the Council
of State and Territorial Epidemiologists (CSTE).
The Summary is located on the Internet at http://www.cdc.gov/mmwr/
summary.html. This site also includes publications from past years.
Because the dates of onset or diagnosis for notifiable diseases are not always
reported, these surveillance data are presented by the year and week they were
reported to CDC by public health officials in state and territorial health departments.
The data are finalized and published each year in the Summary for use
by state and local health departments; schools of medicine and public health;
communications media; local, state, and federal agencies; and other agencies
or persons interested in following the trends of reportable diseases in the United
States. This publication also documents which diseases are considered national
priorities for notification and the annual number of reported cases of such diseases.
The Highlights section presents information on selected nationally notifiable
diseases to provide a context in which to interpret surveillance and disease-trend
data and to provide further information on the epidemiology and prevention of
selected diseases.
Part 1 contains tables showing incidence data for each of the diseases
considered nationally notifiable during 2001.* The tables provide the
number of cases of
notifiable diseases reported to CDC for 2001, as well as the distribution of
cases by month and geographic location and by patient's age, sex, race, and Hispanic
ethnicity. The data are final totals reported as of June 21, 2002, unless otherwise
noted. Nationally notifiable diseases that are reportable in <40 states also
do not appear in these tables. Ehrlichiosis, human, other or unspecified agent,
is not reported in any tables because data are incomplete. In all tables, leprosy
is listed as Hansen disease, and tickborne typhus fever is listed as Rocky Mountain
spotted fever (RMSF). In addition, syphilis (all stages) includes the following
categories: latent; early latent; late latent; latent of unknown duration; neurosyphilis;
late, with clinical manifestations other than neurosyphilis; syphilitic stillbirth,
and congenital syphilis. Part 2 contains graphs and maps that depict summary
data for many of the notifiable diseases described in tabular form in Part 1.
Part 3 contains tables that list the number of cases of notifiable diseases reported
to CDC since 1970. This section also includes a table enumerating deaths associated
with specified notifiable diseases reported to the National Center for Health
Statistics (NCHS), CDC, during 1996-1999.†
The Selected Reading section presents general and disease-specific references
for notifiable infectious diseases. These references provide additional information
on surveillance and epidemiologic issues, diagnostic issues, or disease control
activities.
*Because no cases of paralytic poliomyelitis, western equine
encephalitis, or yellow fever were reported in the United States during 2001,
these diseases do not appear in the tables in Part 1.
† In 1999, mortality data began to be coded according to
the International Statistical Classification of Diseases and Related
Health Problems, Tenth Revision. To bridge the mortality data for the
period 1996-1998 (deaths coded using the International Classification
of Diseases, Ninth Revision), and 1999, we use comparability ratios
provided by the National Center for Health Statistics.
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