A retrospective study on 4693 patients with epidemic fever/epidemic haemorrhagic fever during 1990-1999 in Thanh Hãa province to find and identify the epidemic haemorrhagic fever, viral isolation, serological diagnosis in 5 coast line districts, 9 district in the delta region and 1 mountain district. The results have demonstrated that the average morbidity rate of the haemorrhagic fever in Thanh Hãa during 1990-1999 was 24.5/100.000; the average mortality rate of haemorrhagic fever was 0.04/100.000. Some epidemics had high morbidity rate included HËu Léc (1573.7/1in 1991) and SÇm S¬n (1978.7/1in 1998). Both were under the country's spread epidemics. There was significant difference of morbidity and mortality rate from the geographic region to another. The disease occurred all ages
Fever ; epidemiology

Morbidity and mortality of typhoid fever in Dong Thap province had reduced gradually in the last 10 years. The number of typhoid fever between 1999 and 2003 was equal to a third cases occurred between 1994 and 1998. There had been 29 of dead cases resulting from typhoid fever for ten years. The highest number of dead cases in 1995 was 6. The death to incidence ratio was 0.076%
epidemiology ; Typhoid Fever ; Fever

Studying on typhoid fever in 16417 people of Binh Thanh Trung commune and 16324 ones of Vinh Thanh commune (control commune) after 2 years with the intervention. The results showed that drinking water sterilized by chloramin B increased by 295.58%, drinking boiling water increased by 10.06%; drinking rainny water increased by 464.30%; vegetable washing by safety water increased by 2886.61%, good sanitary latrine increased by 292.30%, close fish pond latrine increased by 46.91%, sinking latrine increased by 195.995%, fish pond latrine open to river reduced by 17.68%, latrine on the river reduced by 29.24%. Typhoid fever reduced by 92% in comparison to before interventrion. Real effect in comparison to control commune was 5.04%
Typhoid Fever ; Therapeutics ; Epidemiology

Results after 2 years of studying on 403 patients showed that: CM(+) rate was 14,8%. The rate of temporary Salmonella carriers (who treated as antibiogram in the hospital after 3 months, CP(+): 10% in 1998 and 0% in 1999. The rate of Salmonella carriers contacted with patients, patients' relatives: 19,9% in 1998 and 0% in 1999. The rate of healthy Salmonella carriers: 1% in 1998 and 0% in 1999. The rate of chronic Salmonella carriers (people with disease free after 1 year CP(+): 8,3% in 1998 and 0% in 1999). After treatment by 1-2 courses of antibiotic as antibiogram, all Salmonella carriers were Salmonella free according to the results of culture
Typhoid Fever ; Salmonella ; epidemiology

According to reported data from provinical centers of preventive medicine, 177. 737 typhoid fever cases, 137 deaths were recorded all over the country in the period from 1991-2000. In 27 provinces of the North, there were 15.087 cases and 44 deaths, and accounting for 8.5% and 32.4% of the total cases and deaths, respectively. Typhoid fever was found mainly in mountain provinces, the morbidity per 100.000 inhabitants was in Lai Chau: 94.16; Lang Son: 22.21; Ninh Binh: 18.69; Lao Cai: 14.22. Typhoid fever occurred whole year round. It was more prevalent from May to October. Especially in June, July, August and September. Morbidity of typhoid fever in children aged under 15 made up 50%. Thus, vaccineation for this high-risk group is necessary
Typhoid Fever ; epidemiology

In the Mekong Delta, the incidence of typhoid fever has an increasing trend. The highest morbidity rate is observed at Dong Thap province. Outbreaks of typhoid fever usually occur during the rainy season of the year. Most of the clinical isolation pf S.typhi are found resistant to chloramphenicol. Recently the emergency of nalidixic acid-resistant strains has been also observed
Typhoid Fever ; epidemiology

In 2 epidemics of Dengue haemorrhagic fever in Bien Hoa, the predominant serotypes of dengue virus in the year 2000 and 2003 were Dengue-4 and Dengue-1, respectively. The number of clinical cases of children under 15 years old diagnosed as viral infection and unknown fever (n=1653), were higher than those diagnosed as Dengue fever/Dengue haemorrhagic fever (DF/DHF) (n=1122). The number of Dengue virus isolated from patients with viral infection and unknown fever (n=102) was higher than those isolated from DF/DHF cases (n=85). The number of Dengue positive MAC-ELISA cases in 2 years was 870 corresponding to a positive rate of 30.27%
Dengue ; Epidemiology ; Dengue Hemorrhagic Fever

Retrospectative study on 20 infants with dengue heamorrhagic fever was confirmed by Mac ELISA at Chau Doc Hospital in 2001, study group was 6 infants < 12 months age, control group was 14 infants > 12 months age. 100% high fever; 66,7% subcutaneous peteachie; 66,7% hepatomegaly; 50% gastro-intestinal bleeding; accompany with respiratory infection were the most common signs. 100% hemoconcentration; 80% glomerule under 100.000/mm3. The rate of dengue shock syndrome was rather high. IgG antibody which infants less than 1 year old transplacetally received from their mothers caused antibody dependent enhancement of infection, so they with primary-type infection were at risk of dengue shock syndrome as in older children with secondary infection
Dengue ; diagnosis ; Fever ; Hospitals ; epidemiology

BACKGROUNDTyphoid/paratyphoid fever (TPF) is endemic in Guizhou. We conducted wavelet analysis and Spearman's rank correlation analysis to explore the impact of meteorological variations on TPF infection in Guizhou, in an attempt to assess the risk factors associated with TPF epidemics.

METHODSWe examined the association between TPF incidence in Guizhou and temperature, precipitation and relative humidity using 24 years of data from 1984 to 2007. Periodicities of TPF incidence and the impact of climate factors on the TPF were detected by Spearman's rank correlation and wavelet analysis,

RESULTSTemperature and precipitation with a 1-month lag were positively correlated with the monthly incidence of TPF. The multiyear incidence pattern of TPF in Guizhou was explicitly periodic. Moreover, the association and driving effect of precipitation on TPF were observed, and the results showed that the incidence of TPF in Guizhou had a closer correlation with precipitation than with temperature.

CONCLUSIONSSafe water supply is the key issue for TPF control in Guizhou. Moreover, climate variation might impact the enteric infections, which may inform policy assessment for TPF control in Guizhou.

China ; epidemiology ; Humans ; Incidence ; Paratyphoid Fever ; epidemiology ; Rain ; Temperature ; Typhoid Fever ; epidemiology

In the year 2001, the Arbo virus Laboratory had received Dengue hemorrhagic fever samples from 19 provincial center for Preventive Medicine to isolate virus. 83 dengue viruses of 4 type were detected. Among them, the two main germs were dengue 2 and dengue 4. Viruses were detected mainly in infected children with hemorrhagic fever of I-II degree. Dengue 2 was the causative agent of DHF of I-III degree with a higher number of cases than other serotypes. 4.046 sera samples was examined by Mac ELISA, among them 56.13% was (+). However in Ma-ELISA(+) regions, there is no effective methods for dengue control.
Dengue ; Dengue Hemorrhagic Fever ; Child ; epidemiology ; serum