Anecdotal reports have attributed persistent splenomegaly in African sickle cell anemia (SS) patients to the effects of malaria. However, no comparative studies of patients in malarial and nonmalarial regions have been conducted, and few studies of malaria antibody titers have been reported. In the present study, age- and sex-matched Nigerian patients (n = 310), while it was found only in 8% of U.S. patients (n = 100) from Georgia. There was significant linear correlation between spleen size and Hb levels and with serum immunoglobulins in the Nigerian group. However, serum complement levels (C3 and C4) were not affected by spleen size. In both groups, patients with splenomegaly had fewer circulating pitted red cells than their counterparts without splenomegaly. The mean +/- SE of IgG-specific malaria antibody titer among the Nigerian patients without palpable spleens was 9,386 +/- 2,036; 9,334 +/- 2,980 in those with spleens between 1 and 5 cm, 16,201 +/- 4,502 in those with spleens between 6 and 10 cm, and 22,445 +/- 8,456 in those with spleens above 10 cm. Coexistent alpha-thalassemia did not influence the prevalence of splenomegaly among the Nigerian SS patients. This study provides additional evidence that malaria plays a significant role in the persistence of splenomegaly in African patients.
This study was conducted to determine the frequency of antenatal intrauterine fetal death (IUFD) and the associated maternal and fetal risk factors in women who presented at a regional tertiary hospital in Saudi Arabia. Over a 5-year period, 191 consecutive cases of IUFD presented and were studied prospectively. Relevant maternal and fetal data were obtained. The stillbirth rate during the period was 10 per 1000 deliveries. In 41% of the cases, the associated causal factors could not be determined. There was a significant (P = 0.00122) linear trend showing an increased risk of IUFD above the age of 20 years and, similarly, a significant (P = 0.00047) linear trend after the first pregnancy. Lack of antenatal care (88.5%), hypertensive diseases in pregnancy (12%) and diabetes mellitus (8%) were associated risk factors while 'major congenital malformation' (14%) was an outstanding fetal factor. The risk factors of antenatal stillbirth in our community seem to be avoidable. Health education to encourage the utilisation of the available antenatal care services, family planning and genetic counselling are being advocated strongly as possible preventive measures.
Background: Rabies is a preventable zoonosis with the highest case fatality of any disease in the world. In the developing world, it is transmitted mainly by dog bites. In parts of southern Nigeria, dog meat is a delicacy. Objective: To highlight trade in stray dogs as a major risk factor for rabies in animals and humans in south-south Nigeria. Method: Patients admitted into the University of Calabar Teaching Hospital (UCTH) with a diagnosis of rabies between July and October 2012 were analysed for risk factors, post exposure prophylaxis (PEP), health seeking behaviour and outcome. Focused group interview were also conducted among traders/ handlers of stray dogs. Results: Ten cases of rabies in subjects aged 3 to 52 years were recorded in these five months period. Eight of the cases were male and apparently got infected directly or indirectly through the trade in stray dogs for human consumption. None had proper PEP and all patients died. Conclusion: Stray dog trade, fuelled by eating of dog meat, is a risk factor for human and animal rabies in Calabar, southern Nigeria. Culling of stray dogs, control of stray dogs' trade and public enlightenment on PEP is recommended.
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