I. General Situation of the Epidemics

During the 21st week of 2009 (from 0 a.m.on May 25 to 12 p.m.on May 31), 3,716 cases of 18 legally defined infectious diseases with 6 cases of death (three cases of hepatitis B, one case of tuberculosis, one case of AIDS and one case of hand-foot-mouth disease) are reported in 18 districts and counties in Beijing. Among them are 1,236 cases of twelve categories of Type B infectious diseases, 4.19% lower than last week and 15.98% lower than the same period of last year respectively. The top five diseases reported are as follows: dysentery, tuberculosis, hepatitis B, syphilis and scarlatina. In addition, there are 2480 cases of six categories of Type C, 9.35% higher than last week and 2.14% higher than the same period of last year respectively.
　　
This week, 2,480 cases out of the following 6 categories of Type C infectious diseases are reported: other infectious diarrhea diseases, hand-foot-mouth disease, epidemic parotitis, rubella, acute hemorrhagic conjunctivitis and epidemic influenza. The number accounts for 66.74% of the total and is 2.14% higher than the same period of last year. The diseases with an increasing number of reported cases are hand-foot-mouth disease and other infectious diarrhea diseases.
　　
II. Focus on the Epidemic

 (I) Type A H1N1 Influenza
This week, 3 cases are reported. As of the 21st week, reported and confirmed cases of Type A H1N1 influenza total at 8 in Beijing.

 (II) Measles
This week, 39 cases are reported in Beijing, down 29.09% compared with last week and 54.12% compared with the same period of last year. Among them, the top four districts and counties with the most cases are Chaoyang, Haidian, Chanping and Daxing districts, accounting for 69.23% of the total cases. The patients are scattered-living children, students, household workers and unemployed people, accounting for 53.85% of the total cases.

 (III) Chicken Pox
A total of 466 cases of chicken pox are reported this week, 7.36% lower than last week and 17.81% lower than the same period of last year. The top five regions reporting the most incidence rates are Chaoyang District, Fengtai District, Haidian District, Shunyi District and Changping District, accounting for 68.88% of the total reported cases. Those infected are mainly students and preschool children, accounting for 83.05% of the total.

 (IV) Hand-foot-mouth Disease
This week, 1,044 cases are reported, down 4.48% from last week and up 10.36% from the same period of last year. The top five districts and counties with the most cases are Fengtai, Chaoyang, Haidian, Daxing and Tongzhou districts, accounting for 63.70% of the total reported cases. Those infected are mainly composed of scattered-living children and preschool children, accounting for the 95.59% of the total reported cases.

III. Precautions

As the number of Type A H1N1 influenza cases is increasing nationwide, China encounters more risk of interpersonal and community-based transmission in the mainland China. In order to further monitor Type A H1N1 influenza and to improve prevention and control of the epidemic outbreak, Beijing Municipal Health Bureau requests all related departments to earnestly implement Notice on Further Strengthening the Prevention and Control Work on Type A H1N1 Influenza issued by the General Office of Ministry of Health. Meanwhile, we advise the public to keep monitoring the homecoming people and keep a healthy lifestyle, because joint efforts are needed to ease the spread of Type A H1N1 influenza.
 
This week, Beijing sees the epidemic dominated by intestinal infectious diseases such as dysentery and other infectious diarrhea diseases. The reported number of incidences is on the rise over last week. As summer arrives, Beijing Municipal Health Bureau requests all related departments to carry out the prevention and control of Type A H1N1 influenza while paying close attention to intestinal infectious diseases to ward off the outbreak of such epidemic. The media shall publicize prevention and treatment knowledge of intestinal infectious diseases in summer to citizens in advance, so as to raise the public’s awareness of disease prevention and to reduce the incidence of intestinal infectious diseases from the source.