An outbreak of Ebola in Uganda.

An outbreak of Ebola disease was reported from Gulu district, Uganda, on 8 October 2000. The outbreak was characterized by fever and haemorrhagic manifestations, and affected health workers and the general population of Rwot-Obillo, a village 14 km north of Gulu town. Later, the outbreak spread to other parts of the country including Mbarara and Masindi districts. Response measures included surveillance, community mobilization, case and logistics management. Three coordination committees were formed: National Task Force (NTF), a District Task Force (DTF) and an Interministerial Task Force (IMTF). The NTF and DTF were responsible for coordination and follow-up of implementation of activities at the national and district levels, respectively, while the IMTF provided political direction and handled sensitive issues related to stigma, trade, tourism and international relations. The international response was coordinated by the World Health Organization (WHO) under the umbrella organization of the Global Outbreak and Alert Response Network. A WHO/CDC case definition for Ebola was adapted and used to capture four categories of cases, namely, the 'alert', 'suspected', 'probable' and 'confirmed cases'. Guidelines for identification and management of cases were developed and disseminated to all persons responsible for surveillance, case management, contact tracing and Information Education Communication (IEC). For the duration of the epidemic that lasted up to 16 January 2001, a total of 425 cases with 224 deaths were reported countrywide. The case fatality rate was 53%. The attack rate (AR) was highest in women. The average AR for Gulu district was 12.6 cases/10 000 inhabitants when the contacts of all cases were considered and was 4.5 cases/10 000 if limited only to contacts of laboratory confirmed cases. The secondary AR was 2.5% when nearly 5000 contacts were followed up for 21 days. Uganda was finally declared Ebola free on 27 February 2001, 42 days after the last case was reported. The Government's role in coordination of both local and international support was vital. The NTF and the corresponding district committees harmonized implementation of a mutually agreed programme. Community mobilization using community-based resource persons and political organs, such as Members of Parliament was effective in getting information to the public. This was critical in controlling the epidemic. Past experience in epidemic management has shown that in the absence of regular provision of information to the public, there are bound to be deleterious rumours. Consequently rumour was managed by frank and open discussion of the epidemic, providing daily updates, fact sheets and press releases. Information was regularly disseminated to communities through mass media and press conferences. Thus all levels of the community spontaneously demonstrated solidarity and response to public health interventions. Even in areas of relative insecurity, rebel abductions diminished considerably.

Epidemiology of cholera outbreak in Kampala, Uganda.

OBJECTIVE: To provide epidemiological description of the cholera outbreak which occurred in Kampala between December 1997 and March 1998. DESIGN: A four-month cross-sectional survey. SETTING: Kampala city, Uganda. MAIN OUTCOME MEASURES: Number of cases reported per day, attack rate per age group and per parish, case fatality ratio. RESULTS: The cholera outbreak was due to Vibrio cholerae O1 El Tor, serotype Ogawa. Between December 1997 and March 1998, 6228 cases of cholera were reported, of which 1091 (17.5%) were children under five years of age. The overall attack rate was 0.62%, similar in the under-fives and five and above age groups. The case fatality ratio among hospitalised patients was 2.5%. The peak of the outbreak was observed three weeks after the report of the first case, and by the end of January 1998 (less than two months after the first case), 88.4% of the cases had already been reported. The occurrence of cases concentrated in the slums where the overcrowding and the environmental conditions resembled a refugee camp situation. CONCLUSION: The explosive development of the cholera outbreak in Kampala, followed by a rapid decrease of the number of cases reported is unusual in a large urban setting. It appeared that each of the affected slums developed a distinct outbreak in a non immune population, which did not spread to contiguous areas. Therefore, we believe that, a decentralised strategy, that would focus the interventions on each heavily affected area, should be considered in these circumstances.

Seroepidemiology of HIV infection: an early survey in a peripheral area of Uganda.

At the end of 1985, when the AIDS epidemic was in its early stages in Uganda, a survey was carried out in a peripheral area of the country. Sera were collected from groups of people, and examined for the presence of HIV infection. The results show a very limited number of positive cases, present only among sexually active subjects. High specificity and sensitivity in the laboratory tests was shown by the Western blot technique.

Risk factors associated with HIV infection in Uganda.

Risk factor data were collected in 1,328 inpatients and outpatients in 1987 in 15 hospitals throughout Uganda; 42% were positive for HIV antibodies by ELISA. Seropositivity was associated with urban residence, sexually transmitted diseases (STD), number of sex partners, and sex for payment or with a person with an AIDS-like illness. Homosexuality and intravenous drug abuse, recognized risk factors in western countries, were not seen as risk factors. By multivariate analysis, urban residence and sex for payment were not independently associated with infection. Among females, number of sex partners, sex with a person with an AIDS-like illness, and numbers of episodes of STDs were significantly associated with seropositivity. In males, similar associations were seen, although number of reported sex partners was not independently associated with infection. These findings support the view that heterosexual contact is the predominant mode of transmission in Uganda and suggest that the main risk factors relate to high-risk heterosexual behavior.

Towards a national AIDS-control program in Uganda.

A national AIDS-control program was developed in Uganda to deal with a potentially serious epidemic of the acquired immunodeficiency syndrome (AIDS). A cumulative total of 1,138 cases of AIDS has been reported in Uganda between 1983-since AIDS was introduced into the country-and March 1987. More than 80% of the victims are sexually active persons whereas less than 10% are infants and children younger than 5 years. Virtually no cases or seropositivity is reported in persons between the ages of 5 and 14 years or after the age of 60 years. Most transmission has been through the heterosexual route, and, unlike in the United States, the male-female ratio is 1:1. Heterosexual high-risk behavior is cited as an important mode of transmission. A survey of household contacts showed that despite the closeness, only the sexual partners were seropositive.A five-year plan of action has been developed, and health education is the main thrust. It also includes blood screening, improved sterile procedures, improved surveillance and notification, research and terminal patient care. The plan stresses integration based on primary health care. There are unresolved moral issues of whether or not to tell the truth to an AIDS victim or any healthy seropositive person in developing countries, especially unstable persons. The best approach is to sensitize everyone so that they become guardians of their lives because sexual behavior is an issue of individual responsibility.

Estimating health service utilization, immunization coverage, and childhood mortality: a new approach in Uganda.

PIP: Interviews were conducted in the 75 households nearest to each of the 36 rural health facilities in Uganda's Mbale District in order to estimate childhood morbidity/mortality and the utilization of health services. Data were obtained on 2596 children under 5 years of age. There were 50 deaths in the 527 live births in the 12 months preceding the survey, giving an infant mortality rate of 95/1000. There were an additional 51 deaths among the 2069 children 1-4 years of age (25/1000). 34% of deaths among infants and 69% of deaths among children 1-4 years of age were associated with diarrhea. Of the 2495 children 0-4 years of age who were alive at the time of the survey, 506 (20%) had diarrhea in the 2 weeks preceding the survey and there was a diarrhea morbidity rate of 3.2 episodes/year/child. Only 60 (12%) of the children with diarrhea were treated with some form of oral rehydration; 314 (62%) were given drugs obtained from local pharmacies. Finally, only 38% of children 1-4 years of age and 21% of infants under 1 year of age were fully immunized for their age. These findings suggest high rates of childhood mortality and underutilization of preventive health services among households in the immediate vicinity of health facilities. This research approach can be used to facilitate program evaluation, even though the results cannot be generalized to the entire population of the district. It provides local health workers with an opportunity to assess their community's health needs and motivates them to improve health care delivery.^ieng