MMWR. Morbidity and mortality weekly report ; v. 52, no. 46

Morbidity and Mortality Weekly Report (MMWR)

Primary and Secondary Syphilis--United States, 2002 -- Public Health and Aging: Health-Related Quality of Life Among Low-Income Persons Aged 45-64 Years--United States, 1995-2001 -- Direct and Indirect Costs of Arthritis and Other Rheumatic Conditions--United States, 1997 -- Diabetes Among Young American Indians--Montana and Wyoming, 2000-2002 -- Investigation of a Ricin-Containing Envelope at a Postal Facility--South Carolina, 2003 -- West Nile Virus Activity--United States, November 13-19, 2003 -- Notice to Readers: CDC Announces The CDC Experience -- Erratum: MMWR Summary of Notifiable Diseases--United States, 2001, Vol. 50, No. 53, 2003 -- Notifiable Diseases/Deaths in Selected Cities Weekly Information .