I. General Situation of the Epidemics

The 23rd week of the year 2009, from 0 o'clock of June 8 to 24 o'clock of June 14, across the 18 districts and counties of Beijing, 3693 cases of 17 legal infectious diseases were reported, among which 1 died (hepatitis B).Among them are 1328 cases of 11 categories of Type B Infectious Diseases, 4.12% lower than last week and 7.91% lower than the same period of last year respectively; the top five diseases reported are as follows: tuberculosis, dysentery, hepatitis B, syphilis and scarlatina; 2365 cases of 6 categories of Type C, 2.75% lower than last week and 1.66% lower than the same period of last year respectively.

This week, 2365 cases of 6 categories of Type C Infectious Diseases, namely other infectious diarrhea, hand-foot-mouth disease, epidemic parotitis, rubella, acute hemorrhagic conjunctivitis and epidemic influenza were reported in Beijing, accounting for 64.04% of the total and 1.66% lower than the same period last year.Among them, the diseases with increased report case were epidemic influenza, acute hemorrhagic conjunctivitis, epidemic parotitis and hand-foot-mouth disease; the diseases with decreased report case were rubella and other infectious diarrhea.

II. Focus on the Epidemic

(I) Type A H1N1 Influenza

This week, 28 confirmed cases of Type A H1N1 Influenza were reported, an increase of 17 cases over the previous week. As of the 23rd week, reported and confirmed cases of Type A H1N1 Influenza total at 47 in Beijing. Of these, 29 were foreign nationals and 1 case was stateless, accounting for 63.83% of the total number of reported cases; age ranged from 1 to 72, in which the patients in the age group below 40 are more with a total of 36 cases, accounting report 76.60% of the total number of reported cases.

(II) Measles

This week, 27 cases of measles are reported in Beijing, down 20.59% compared with last week and down 38.64% compared with the same period of last year. Among them, the top three regions reporting the most incidence rates were Chaoyang District, Fengtai District, and Haidian District , accounting for 51.85% of the total cases; the patients were mainly scattered-living children, household workers, unemployed people, workers and students, accounting for 66.67% of the total.

(III) Chicken Pox

A total of 372 cases of chicken pox are reported this week, 0.53% lower than last week and 18.78% lower than the same period of last year. The top 5 regions reporting the most incidence rates were Chaoyang District, Fengtai District, Haidian District, Tongzhou District and Daxing District, accounting for 64.78% of the total reported cases. Those infected were mainly students and preschool children, accounting for 75.27% of the total.

(IV) Hand-foot-mouth Disease

This week, 873 cases are reported, down 4.38% from last week and up 13.97% from the same period of last year. The top 5 regions reporting the most incidence rates were Daxing District, Fengtai District, Chaoyang District, Haidian District and Changping District, accounting for 64.15% of the total reported cases. The patients were mainly scattered-living children and preschool children, accounting for 94.62% of the total.

As of the 23rd weeks, the city has reported 10913 cases of hand-foot-mouth disease with two cases of death. The city’s cumulative reported cases decrease by 20.92% from the same period last year.

III. Precautions

This week, WHO raised its pandemic alert to the highest level of six, and the city’s reported cases of Type A H1N1 Influenza had a substantial increase over last week, suggesting that the sporadic local cases appear in Beijing and the risk of spread in community-wide scope is increasing. The relevant departments should follow the mobilization and deployment requirements of the Ministry of Health on national health care organization to prevent and control Type A H1N1 Influenza and take “reducing the second-generation cases, preventing the spread in the community, strengthening the treatment of severe influenza cases and responding to the epidemic change” as the work goal at this stage to do a good job in prevention and control.

This week, the infectious diseases keep stable in general. Because now we are still in the peak season of intestinal infectious diseases, strengthening the prevention and control of intestinal infectious diseases and preventing epidemic outbreak should not be relaxed.