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PubMed1983

Cellular immunity in typhoid fever, Legionnaires' disease, amebiasis: role of transfer factor and Levamisole in typhoid fever.

Typhoid fever is an infectious disease commonly seen in the tropics, with multisystem involvement and a high morbidity and mortality rate. Legionnaires' disease: a newly described acute respiratory infection by unusual aerobic gram-negative micro-organisms namely Legionella pneumophila. Cellular immunity: in vitro and in vivo evaluations of cellular immunity using E-rosette formation (E) and 2.4-Dinitrochlorobenzene (D) reaction were made in typhoid fever, amebiasis and Legionnaires' disease. Results will be presented. Three patients with relapsing typhoid fever were given transfer factor and another group with typhoid fever were given Levamisole with sulfamethoxazole-trimethoprim. Up to 90% of the cases receiving immunopotentiating factors/agents improved faster in both general condition, fever and cellular immunity.

Adult↗
PubMedDate not supplied

Safety and immunogenicity of a new inactivated hepatitis A vaccine in concurrent administration with a typhoid fever vaccine or a typhoid fever + yellow fever vaccine.

Two clinical studies were conducted to evaluate the safety and immunogenicity of concomitant administration of a new inactivated hepatitis A (HA) vaccine and either a typhoid fever (Vi) vaccine or a combination of Vi and yellow fever (YF) vaccines. In study 1, 62 healthy adults received HA+Vi into the deltoid muscle on contralateral sides. In study 2, 59 healthy adults received HA and a combined Vi/YF vaccine into the contralateral deltoid muscles. Reactogenicity was evaluated for 14 days following vaccination. Blood samples (for antibody titration) were obtained prior to vaccination on days 0 and 28 in study 1 and prior to vaccination on day 0 and on days 14 and 28 in study 2. The overall rate of local reactions was 19% at the HA injection site and 75% at the Vi injection site in study 1; the rate of systemic reactions was 41%. In study 2, local reactions occurred at 27% and 78% of the HA and Vi/YF injection sites; the rate of systemic reactions was 42%. All reactions were transient. Twenty-eight days after vaccination, the seroconversion rate was 100% for HA antibodies and 90% for the Vi vaccine in study 1. Rates of seroconversion in study 2 were 100% for the HA vaccine, 92% for the Vi vaccine, and 100% for the YF vaccine. Although this study was not comparative, both tested combinations were safe and immunogenic, and their routine use for persons at risk, such as travelers, can be recommended.

Adolescent↗
PubMed2003

Prevalence of typhoid fever in febrile patients with symptoms clinically compatible with typhoid fever in Cameroon.

Typhoid fever is difficult to differentiate from other causes of infection such as malaria because their signs and symptoms often overlap. There has been an unprecedented increase in the number of typhoid fever cases diagnosed in Cameroon. Febrile patients are often treated for malaria and typhoid fever simultaneously. This cross-sectional study was carried out to determine the prevalence of typhoid fever in 200 consecutive patients with fever and symptoms clinically compatible with typhoid fever to verify recent estimates of a high prevalence of typhoid fever in Cameroon. Patients were enrolled in three of the 10 provinces of Cameroon. Blood culture, thick and thin blood smears and Widal tests using acute sera were performed in all cases; stool culture for 120 patients. Typhoid fever was confirmed in only 2.5% as evidenced either by culture (four cases) or high salmonella antibody titres (one case); malaria was diagnosed in 94 (47%) patients. Typhoid fever is not as endemic in Cameroon as recently feared.

Adolescent↗
PubMed1979

Detection of antibodies to Salmonella "O" antigens in typhoid fever by counterimmunoelectrophoresis. II. Assessment in patients with typhoid fever and in a healthy population.

Two different population groups were studied. In one, 50 patients with a confirmed diagnosis of typhoid fever. Serum determinations were made for the detection of antibodies to S. typhi somatic antigen using Widal technique, surface fixation test and counterimmunoelectrophoresis (CIE). In the other group, 350 healthy subjects were studied to determine the minimum diagnostic titer by means of CIE. It was possible to establish that a 1:16 titer was suggestive of typhoid fever when CIE techniques were used. Surface fixation test showed the highest sensitivity levels. CIE with sensitivity levels similar to those found in Widal's reaction exceeds the other test because of its standardization and greater reproducibility.

Adolescent↗