Trichinosis - Continued Editorial Note: Trichinosis in the United States has decreased markedly in recent decades, but it remains a public health problem. It became a reportable disease in 1947 at which time the mean annual incidence was well above 300 cases. Since 1950, the annual numbers of reported cases declined gradually until 1966 when they appeared to reach a constant level. As a result of the New Jersey findings of pork adulteration of commercial ground beef, CDC initiated a preliminary survey in 12 states to determine an estimate of the degree of such adulteration. Participating local and state health department officials submitted 231 ground beef samples to CDC purchased June-September 1976 from 136 Current Trends retail markets. Evidence of pork adulteration was demonstrated in 6% of samples from 6 states. State and federal regulations prohibit the presence of pork in ground beef products. For health considerations and because of religious beliefs, consumers should be made aware of the presence of pork in food products. Reported by the Parasitic Diseases Div, Bur of Epidemiology, CDC. References 1. Zimmermann WJ, Steele JH, Kagan IG: Trichinosis in the United States population 1966-70 - prevalence and epidemiologic factors. Health Serv Rep 88:606-623, 1973 A A copy of the report from which these data were derived is available on request from the Center for Disease Control, Attention: Chief, Parasitic Diseases Div, Bur of Epidemiology, Atlanta, Georgia 30333 Influenza - Worldwide Worldwide: Sporadic cases of influenza have been reported in Thailand. Six strains of influenza virus antigenically close to A/Victoria/3/75 have been isolated there from September 24 through October 26. No isolates of A/ New Jersey/76-like virus have been reported. Reported by the World Health Organization in the Weekly Epidemiological Record 51 (48):369, 1976. United States: As previously reported (MMWR 25[48]), an isolate of an A/New Jersey/76 virus was made from an Aseptic meningitis DISEASE isolated case of influenza in a Wisconsin man. The clinically ill swine on this man's farm also yielded A/New Jersey/76 virus, but community investigation has indicated no secondary spread. There has been no indication of influenza activity elsewhere in Wisconsin. Pneumonia and influenza mortality have remained within normal limits throughout the United States. Influenza (Continued on page 399) Brucellosis 2 252 166,452 143 1,321 3,939 244 132,901 4,071 175 Post-Infectious 3 5 5 251 13,854 Type unspecified 166 194 7,931 7.783 *Delayed reports: Asep Meng.: Nev. 1; Brucellosis: Kans, add 23; Chickenpox: N. Hamp, add 10, Fla. delete 1, Calif. add 11, Guam add 3; Hep. B: Tex, add 2; Hep. A: Va. delete 1, Fla. delete 3, Tex. add 33, Nev. add 7; Hep. unsp.: Va. delete 2, Tex. add 1 Guam* Puerto Rico Virgin Islands NN: Not notifiable NA: Not available "Delayed reports: TB: Mich, delete 1, Mo. delete 1, S. Dak. add 2, Kans. delete 1, N. Car. delete 5, Ga. add 12, Fla. delete 2, Okla. delete 1, Guam add 4; Taremia: Wisc. delete 1; Typhoid fever: Ohio delete 1; GC: Neb. delete 4 (civ.) add 1 (mil.), S. Car. add 611 (civ.) add 108 (mil.), Guam add 6 (civ.); Syphilis: S. Car. add 7, Fla. delete 1, Idaho delete 11, Alaska add 1; An. rabies: S. Dak, add 21, Ga. add 4 The Morbidity and Mortality Weekly Report, circulation 52,000, is published by the Center for Disease Control, Atlanta, Georgia. The data ir this report are provisional, based on weekly telegraphs to CDC by state health departments. The reporting week concludes at close of business on Friday; compiled data on a national basis are officially released to the public on the succeeding Friday. The editor welcomes accounts of interesting cases, outbreaks, environmental hazards, or other public health problems of current interest to health officials. Send reports to: Center for Disease Control, Attn.: Editor, Morbidity and Mortality Weekly Report, Atlanta, Georgia 30333. Send mailing list additions, deletions, and address changes to: Center for Disease Control, Attn: Distribution Services, GSO, 1-SB-36, Atlanta, Georgia 30333. When requesting changes be sure to give your former address, including zip code and mailing list code number, or send an old address label. |