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At least 163 records · Page 9Linked to original sources

[Seroprevalences of zoonotic diseases in nomads and their livestock in Chari-Baguirmi, Chad].

The seroprevalences of brucellosis and Q-fever were evaluated in humans and livestock in three Chadian nomadic communities, i.e., Fulani cattle breeders and Arab camel and cattle breeders. The survey was carried out in 1999 and 2000. The total number of human sera and animal sera tested were 911 and 1637, respectively, for antibodies against Brucella spp. and 368 and 613, respectively, for Coxiella burnetii. Sixteen brucellosis positive human sera resulted in a seroprevelance rate of 2%. Male participants were significantly more often brucellosis seropositive than females. No association was found between brucellosis serostatus and physical findings or reported symptoms. Positive brucellosis serology was more frequent in cattle (seroprevalence, 7%) than in camels (1.4%) and small ruminants (0.5%). Fifteen human sera from 11 Arab camel breeders and 4 Arab cattle breeders were positive for Q-fever (seroprevalence below 1%). Being a camel breeder was a significant risk factor for Q-fever seropositivity. Camels had the highest Q-fever seroprevalence (73%) among livestock species.

Brucellosis↗

[Health care centre attendance by Arab nomadic pastoralists. A case study in Kanem, Chad].

Attendence at a rural health centre in a nomadic setting was monitored over several months to gain insight into factors determining accessibility to permanent primary health facilities by nomadic people. Multiple interactions between favorable and unfavorable factors for health care seeking in a nomadic setting were identified for a health care center particularly appreciated by pastoral nomads.

Adolescent↗

[Impact of canine demography on rabies transmission in N'djamena, Chad].

A transversal study using the clustering technique was carried out in 600 households to estimate dog-population density in the city of N'Djamena and evaluate the knowledge of the inhabitants concerning the risk of rabies. Dog-population density as estimated by negative binomial modelling was 0.03 dogs per person. The dog population estimated taking into account the extrapolated human population for 2001 was at 23 575 dogs (95% confidence interval, 14579-37921 dogs). Three-fourths of inhabitants reported that they had heard of rabies. Most respondents knew some rabies symptoms such as frothing at the mouth, restlessness, and aggressivity. In case of dog-bite injury many respondents said that they would seek care in medical facilities, e.g., health-care centers, hospitals and veterinary clinics, but some said they would also use traditional remedies, witch-doctor services, and self-medication. More than half of the respondents believed that symptomatic rabies could be cured. Because of confinement and feeding needs stray dogs are common. The canine vaccination rate is low (19%) for various reasons including limited financial resources, absence of transportation, unavailability of vaccination facilities, ignorance and negligence. Since access to health care after exposure can be difficult, mass vaccination of dogs is the recommended strategy to control rabies in cities like N'Djamena. Cooperation of all those involved in rabies control is necessary to promote the education and awareness action necessary to promote canine vaccination and reporting of exposure cases to competent authorities.

Animals↗

[Goat smallpox in Chad: study of the pathogeny of the virus in sheep and goats].

A local strain of goat pox virus was tested in goats and sheep. The results showed that 65% of goats and 20% of sheep reacted positively. Only goats died few days after the inoculation (55%) and no mortality was recorded in the sheep. The strict species specificity of this strain was not observed. The difference of sensitivity between sheep and goats was statistically significant.

Animals↗

[Epidemiology of infections caused by HIV-1, HIV-2 and HTLV-1 in the republic of Chad].

From March to July 1989 sero-epidemiological surveys have been carried out in four Chadian towns on representative samples of adults aged 15-44 years in the general population. For the first time, HIV1 virus circulation was shown off with seroprevalence rates varying from 0 to 1.1%. Rates are non-existent for HIV2 and they vary from 0 to 1.6% for HTLV1. These low seroprevalence rates make it difficult to identify special risk factors. There was confirmed a preponderance of heterosexual transmissions of these viruses.

Adolescent↗

[Reliability of the diagnosis of cerebrospinal meningitis during an epidemic. The epidemic in Chad in 1988].

The authors analysed the positive predictive value (PPV) of the clinical diagnosis during an epidemic of meningococcal meningitidis in Africa. This PPV was globally 73.3 +/- 11.2%. This PPV was fluctuating according to the standards of the diagnosis. Typical clinical meningitic syndrome without spinal picture: 85.7 +/- 10.3%, Non typical syndrome and macroscopical aspect of cerebrospinal fluid: 62.5 +/- 16.4%.

Chad↗

[Note on goat pox in Chad: study of the foci].

Several outbreaks of goat-pox were observed from 1985 to 1989 in different villages of the N'Djamena area. The virus strain circulating in this region seemed to be host-specific for goats since sheep kept in contact with goats did not suffer from the disease. Nevertheless, it has to be studied further on whether the virus isolated from sick goats could be pathogenic for sheep.

Animals↗