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Inequality of child mortality among ethnic groups in sub-Saharan Africa.

Accounts by journalists of wars in several countries of sub-Saharan Africa in the 1990s have raised concern that ethnic cleavages and overlapping religious and racial affiliations may widen the inequalities in health and survival among ethnic groups throughout the region, particularly among children. Paradoxically, there has been no systematic examination of ethnic inequality in child survival chances across countries in the region. This paper uses survey data collected in the 1990s in 11 countries (Central African Republic, Côte d'Ivoire, Ghana, Kenya, Mali, Namibia, Niger, Rwanda, Senegal, Uganda, and Zambia) to examine whether ethnic inequality in child mortality has been present and spreading in sub-Saharan Africa since the 1980s. The focus was on one or two groups in each country which may have experienced distinct child health and survival chances, compared to the rest of the national population, as a result of their geographical location. The factors examined to explain potential child survival inequalities among ethnic groups included residence in the largest city, household economic conditions, educational attainment and nutritional status of the mothers, use of modern maternal and child health services including immunization, and patterns of fertility and migration. The results show remarkable consistency. In all 11 countries there were significant differentials between ethnic groups in the odds of dying during infancy or before the age of 5 years. Multivariate analysis shows that ethnic child mortality differences are closely linked with economic inequality in many countries, and perhaps with differential use of child health services in countries of the Sahel region. Strong and consistent results in this study support placing the notion of ethnicity at the forefront of theories and analyses of child mortality in Africa which incorporate social, and not purely epidemiological, considerations. Moreover, the typical advantage of relatively small, clearly defined ethnic groups, as compared to the majority in the national population, according to fundamental indicators of wellbeing--child survival, education, housing, and so forth--suggests that many countries in sub-Saharan Africa, despite their widespread poverty, are as marked by social inequality as are countries in other regions in the world.

Africa South of the Sahara↗

Selective isolation and study on the global distribution of the genus Planobispora in soils.

Planobispora strains, including the type strain, produced abundant sporangia on humic acid-vitamin gellan gum medium when more than 50 colonies grew on a plate. However, these strains did not produce sporangia on the aerial mycelium, a diagnostic characteristic of this genus, when fewer than 20 colonies grew on a plate. Trace salts, such as FeSO4 x 7H2O, MnCl2 x 4H2O, ZnSO4 x 7H2O, and NiSO4 x 6H2O, stimulated sporangium formation of Planobispora strains. Better sporangium formation of Planobispora strains was observed on the humic acid-trace salts gellan gum medium at pH 9.0 than at neutral pH. Moreover, an alkaline medium repressed the growth of three out of six Streptomyces strains so that this condition was effective for selective isolation of Planobispora strains. An alkaline flooding solution of skim milk, five antimicrobial agents, and dry heat treatment at 90 degrees C for 60 min were effective for selective isolation. Using these techniques, we examined the distribution of Planobispora strains by using 1467 soil samples collected from Japan and other parts of the world. One hundred and nineteen Planobispora strains were isolated from 51 soil samples (3.5% of the samples tested) that were collected in Ecuador, Egypt, French Guiana, India, and Madagascar. Planobispora strains were recovered only in tropical and subtropical soils. To our knowledge, this is the first record that Planobispora strains have been isolated from locations other than Venezuela, Namibia, or South Africa.

Actinomycetales↗

[Breastfeeding in Africa: will positive trends be challenged by the AIDS epidemic?].

In Africa, more than 95% of infants are currently breastfed, but feeding practices are often inadequate: feeding water, and other liquids, to breastfed infants is a widespread practice. Consequently, the rate of exclusive breast-feeding is low, particularly in West Africa. The rate of bottle-feeding is high in some countries (exceeding 30% in Tunisia, Nigeria, Namibia and Sudan). Nevertheless prolonged breastfeeding is common, and the median duration of breastfeeding ranges between 16 and 28 months. Urbanization and mothers' education are the major factors that tend to shorten breastfeeding. Nevertheless recent trends show an increase in early initiation and in duration of breastfeeding as a result of promotion efforts deployed by WHO and Unicef, local governments, and non-governmental organizations. The importance of breastmilk as a food resource of African countries is generally not recognized. In 31 countries where data on prevalence of breastfeeding are available, consumption of breastmilk by children under three years is estimated at 3.5 million tons per year. The AIDS epidemic could threaten breastfeeding because the virus can be transmitted through breastmilk, as demonstrated by numerous studies. A study suggests that feeding breastmilk and other liquids to infants could be the feeding mode associated with the highest rate of transmission. To prevent mother-to-child transmission of HIV, WHO recommends replacement feeding if it is feasible and safe. Otherwise, mothers are encouraged to practice exclusive breastfeeding for the first months of life followed by early and rapid weaning. The feasibility of replacement feeding with breastmilk substitutes, however, is very uncertain. In a study where free substitutes were given to HIV-positive mothers, the mortality of the formula-fed infants was the same as that of the breastfed infants. HIV-positive mothers may find it difficult to cope with the constraints of replacement feeding, in terms of cost, workload and time, and with the additional health care needs of non-breastfed infants. Exclusive breastfeeding for a few months could carry a lower risk of death than replacement feeding. But success in promoting exclusive breastfeeding has been limited in Africa, and new promotion methods are needed. Infants of all mothers, whether HIV-positive or not, will benefit from improving the rate of exclusive breastfeeding. The major problem is to ensure that early and rapid weaning, between 4 and 6 months, does not have a negative impact on the child's health. Early weaning is known to increase susceptibility to infections and can cause malnutrition. The feasibility and safety of this recommendation will have to be monitored carefully. A strong determination of African governments to promote exclusive breastfeeding among all mothers and to protect prolonged breastfeeding among non-infected mothers will limit the mother-to-child transmission of HIV while preserving the benefits of breastfeeding.

Africa↗

Taxonomy of Trichinella and the epidemiology of infection in the Southeast Asia and Australian regions.

Seven species belonging to the Trichinella genus (five with encapsulated larvae and two with non-encapsulated larvae in host muscles) and three additional genotypes have been described to date: T. spiralis (genotype T1), a cosmopolitan species with a high infectivity to swine and rats; T. nativa (T2), etiological agent of sylvatic trichinellosis in arctic and subarctic areas of the Holarctic region, and its related genotype (Trichinella T6), detected in Alaska, Idaho, Montana, Pennsylvania, Wyoming, and Ontario; T. britovi (T3), etiological agent of sylvatic trichinellosis in temperate areas of Europe and Asia, and its related genotypes Trichinella T9 in Japan and Trichinella T8 in South Africa and Namibia; T. murrelli (T5), etiological agent of sylvatic trichinellosis in temperate areas of the USA; T. nelsoni (T7), etiological agent of sylvatic trichinellosis in Africa south of the Sahara; T. pseudospiralis (T4), a non-encapsulated cosmopolitan species infecting both mammals and birds; and T. papuae (T10), a recently discovered non-encapsulated species in sylvatic swine of Papua New Guinea. In the Southeast Asia and Australian regions, T. spiralis, T. pseudospiralis and T. papuae have been detected in sylvatic and domestic animals and in humans. A focus of human trichinellosis due to T. papuae was recently discovered in Papua New Guinea, with a prevalence of 28.9%. Trichinellosis has also been documented in domestic animals and/or humans in Cambodia, Indonesia (Bali and Sumatra), Lao PDR, Malaysia, Myanmar, Thailand, and New Zealand, and in wildlife of Tasmania.

Animals↗

A study of the pattern of injuries during the Rugby World Cup pre-qualifying tournament held in Nairobi.

Rugby, like other contact sports, is associated with injuries. We set out to investigate all injuries that led either to a temporary stoppage of the game and/or substitution of a player during the Rugby World Cup pre-qualifying tournament. A total of six matches were played involving the Arabian Gulf, Kenya, Namibia and Zimbabwe. We recorded a total of 47 injuries, giving an injury rate of eight per match. The number of injuries decreased from 38.3% in the first matches to 23.4% in the final ones. The majority of the injuries affected soft tissues, the most serious of them being a concussion. Anatomically, the lower limbs suffered the majority of injuries (46.81%) followed by the head, trunk and upper limbs with 21.29%, 17.03% and 12.78% respectively. Slightly more injuries occurred during the defensive actions (53.19%) than offensive (46.81%) ones. More injuries occurred in thee second half (61.70%) than the first (38.3%). Some of our findings are in agreement with those of earlier studies. However, further investigations are necessary to establish a clear cut pattern of injuries in this sport.

Journal Article↗

Impact of conflict on demographic factors and their importance in negotiated settlement in southern Africa.

"Though the concept of negotiated settlements gained its momentum in southern Africa--Angola, Mozambique, Namibia and South Africa--the full success of negotiations is yet to be seen in most of these countries.... Demographic consequences of conflicts are explained through a systemic model. The importance of demographic variables on negotiated settlement has also been explained the same way. There is no easy way out to overcome conflicts...but it is suggested that mutual consultation with opposition parties or minorities, or the suppressed people, would help ease many situations in Africa or elsewhere."

Africa↗

Global situation of foot-and-mouth disease (FMD)--a short review.

This article reviews the actual world FMD situation. In 2000, fifty nine countries officially reported outbreaks of FMD. The disease occurred in Europe (Greece), Asia (Russia, Mongolia, Bangladesh, Cambodia, China, Japan, Laos, Nepal, Pakistan, Philippines, Republic of Korea, Taiwan, Thailand, Vietnam, Iran, Iraq, Turkey, in Caucasian region--Georgia, Azerbaijan and Armenia as well as in Kazakhstan, Kyrgyzstan, Turkmenistan and Tajikistan), Africa (Egypt, Kenya, Mauritania, South Africa, Tanzania, Uganda, Malawi, Namibia, Zambia and Zimbabwe) and in South America (Brazil, Colombia, Uruguay, Bolivia, Peru, Ecuador and Venezuela). In 2001, FMD was still spreading throughout the endemic regions and appeared in some of the west European countries--Great Britain, The Netherlands, France and Ireland. In South America, FMD occurred in Argentina, Uruguay, Brazil and Colombia. In Asia the FMD spread in Turkey, Iran, Afghanistan, Georgia, Azerbaijan, Mongolia, Kuwait, Bahrain, Yemen, Qatar, United Arab Emirates, Oman, Iran, Bhutan, Nepal, Malaysia, Philippines, Thailand and Taiwan. The FMD situation in Africa was unclear, but probably most countries in West, East and South Africa were affected. The most recent data of the OIE from May 2002 confirmed FMD outbreaks in population of pigs in Republic of Korea.

Africa↗

Progress toward poliomyelitis eradication--Southern Africa, 2001-March 2003.

Since the 1988 World Health Assembly resolution to eradicate poliomyelitis globally, substantial progress has been made in all World Health Organization (WHO) regions, and three regions (Americas, European, and Western Pacific) are classified as polio-free. The African Region comprises four epidemiologic blocks (Central, Eastern, Southern, and Western). The Southern African block comprises 14 countries--10 on the mainland (Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia, and Zimbabwe) and four in the Indian Ocean (Comoros, Madagascar, Mauritius, and Seychelles)--with a combined total population in 2002 of approximately 120 million persons. This report summarizes polio eradication efforts in the Southern African block during January 2001-March 2003, which indicate the possible interruption of wild poliovirus (WPV) transmission and underscore the need to sustain polio eradication efforts.

Africa, Southern↗

Southern Africa: reports document legal responses to HIV/AIDS.

A series of reports have been issued on the legal response to HIV/AIDS in eight member states of the Southern African Development Community (SADC). The states are Botswana, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia, and Zimbabwe.

Africa, Southern↗

A review of the ixodid ticks (Acari, Ixodidae) occurring in southern Africa.

Eighty-three species of ixodid ticks, as well as several entities that have yet to be described, occur in the Republic of South Africa plus the 4 independent states lying within its borders (Bophuthatswana, Venda, Transkei and Ciskei) and in Namibia, Botswana, Lesotho and Swaziland. They belong to the following genera: Amblyomma (8 spp.); Aponomma (3 spp.); Boophilus (2 spp.); Cosmiomma (1 sp.); Dermacentor (1 sp.); Haemaphysalis (10 spp.); Hyalomma (2 spp., one of them with 2 subspp.); Ixodes (25 spp.); Margaropus (1 sp.); Rhipicentor (2 spp.), and Rhipicephalus (28 spp). The history of tick research in this region is reviewed briefly and advances made by the major contributors to our knowledge are highlighted. Short comments on each genus are given. These are followed by information on every species known to occur in the region, presented under the following headings: Species diagnosis, under which references to relevant descriptions are listed and, where appropriate, notes on commonly used synonyms, related species and identification problems are included; hosts, indicating whenever possible the preferences of both the adults and the immature stages, as well as differentiating between common and incidental hosts, and distribution in terms of political (not ecological) divisions.

Africa, Southern↗

[Continuous quinidine infusion and blood exchange transfusion in severe tropical malaria: a case report].

We report on a serious case of malaria due to Plasmodium falciparum. Although the 46-year-old Swiss female had strictly followed the recommended prophylaxis with proguanil and chloroquine she was infected during a stay in Namibia which had lasted several month. The patient had poor prognostic signs such as encephalopathy (cerebral malaria), a parasitemia of 34% but only moderate renal impairment. Instead of the classical treatment with quinine, the patient was treated with a constant infusion of quinidine over 3 days which was combined with an exchange transfusion of approximately 2 liters on the first day of treatment. All clinical signs of the infection improved within less than 2 days as did the parasitemia. The patient was discharged after a hospital stay of 11 days. Quinidine as opposed to quinine may be more readily available, less toxic and more efficacious. Treatment with quinidine must carefully be monitored. Exchange blood transfusions may be an important additional therapeutic modality in severe plasmodium falciparum malaria.

Animals↗

Parasites of South African wildlife. V. A. description of the males of Oesophagostomum mocambiquei Ortlepp, 1964 from warthogs, Phacochoerus aethiopicus (Pallas, 1766).

Oesophagostomum mocambiquei Ortlepp, 1964 was described from 9 females recovered from a warthog, Phacochoerus aethiopicus (Pallas, 1766), from northern Mozambique. Large numbers of O. mocambiquei were recovered during subsequent surveys of the parasites of warthogs from the Kruger National Park and the Hoedspruit Nature Reserve. The males, which have not yet been described, resemble those of Oesophagostomum santosdiasi Ortlepp, 1964 in the principal measurements. They can, however, be differentiated by the shape of the mouth capsule, which is round in O. mocambiquei and oval in O. santosdiasi. A simplified key for the identification of the Oesophagostomum species that occur in warthogs in South Africa and Namibia is provided and the differences between them tabulated. The names Oesophagostomum moçambiquei and Oesophagostomum santos-diasi are corrected to O. mocambiquei and O. santosdiasi respectively, since diacritic marks are not allowed under the Code of International Zoological Nomenclature.

Animals↗

Two new species of ticks from southern Africa whose adults parasitize the feet of ungulates: Rhipicephalus lounsburyi n. sp. and Rhipicephalus neumanni n. sp. (Ixodoidea, Ixodidae).

Theiler & Robinson (1953) described, as Rhipicephalus follis Dönitz, 1910, a tick species originating from Dordrecht, Eastern Cape Province. A comparison of this tick with the syntypes of R. follis has now shown, though, that these 2 entities are different and it is therefore redescribed below as Rhipicephalus lounsburyi n. sp. Its adults parasitize sheep and various wild ungulates, attaching primarily on their feet. The hosts of the immature stages are still unknown. It has now been recorded from several places in the Eastern Cape; once in Natal, at Impendle, and in the Western Cape near Swellendam and between Clanwilliam and Graafwater. A second species, which has in the past been confused with the dassie parasite, Rhipicephalus distinctus Bedford, 1932, is described as Rhipicephalus neumanni n. sp. Its adults also attach on the feet of sheep and goats. The hosts of the immature stages are unknown. It has been widely recorded in the Bethanien and Keetmanshoop Districts of Namibia and, in South Africa, from scattered localities in the Karoo.

Animals↗

Milk tolerance and the malnourished African.

Adult (primary) lactose malabsorption is practically universal in Africans of Bantu and San ('Bushmen') stock. Recent environmental changes, especially in rural areas, have exacerbated rates of malnutrition in hospital patients belonging to these groups. In order to assess the advisability of using milk as a nutritional supplement for such patients, the tolerance and absorption of 350 ml boluses of whole milk (containing 17 g lactose) was measured in 110 malnourished hospitalized patients in Namibia and South Africa belonging to Bantu (ie, Zulus, Hereros, and Kavangos) and San (ie, Bushmen) populations and compared with 22 healthy Westernized controls. Mild symptoms of intolerance were noted in about 10 per cent of Bantus and 20 per cent of Bushmen in comparison to 33 per cent of lactose-malabsorbing controls consuming Westernized diets and reported rates of 48 and 80 per cent in American population studies. The average increase in breath hydrogen excretion of 20 parts per million was also lower than the value of 34 parts per million in controls. Fasting breath methane concentrations were high in between 60-84 per cent of the groups of patients, but the level was not significantly affected by milk ingestion. Despite the combination of hypolactasia and malnutrition, 350 ml drinks of milk were well tolerated by African patients. Thus, milk should form an appropriate nutritional supplement for Africans hospitalized in rural areas.

Africa↗

Afrotropical Culicoides: a redescription of C. (Avaritia) imicola Kieffer, 1913 (Diptera: Ceratopogonidae) with description of the closely allied C. (A.) bolitinos sp. nov. reared from the dung of the African buffalo, blue wildebeest and cattle in South Africa.

Culicoides (Avaritia) imicola, Kieffer is redescribed and its current worldwide distribution reviewed. It is compared with the closely allied C. (A.) bolitinos sp. nov. Descriptions of both sexes of C. imicola and C. bolitinos sp. nov. are based entirely on series of reared adults. T-tests were performed on antennal and palpal data to differentiate more clearly these 2 species. The results are tabulated. Short notes are given on the larval habitat of C. bolitinos sp. nov. in South Africa, namely the dung of the African buffalo, Syncerus caffer, the blue wildebeest, Connochaetes taurinus, and cattle, Bos races. The existence of C. bolitinos in Nigeria, Kenya, Malawi, Zimbabwe, Lesotho and South Africa is established while C. imicola is newly recorded from Malawi, Botswana, Namibia and Swaziland. Finally seven references in the literature are shown to refer either to C. bolitinos sp. nov. or to closely allied as yet undescribed species.

Animals↗

Afrotropical Culicoides: Synhelea Kieffer, 1925, resurrected as subgenus to embrace 10 species (Diptera: Ceratopogonidae).

Synhelea Kieffer, 1925, is resurrected from synonymy to embrace 10 species of Afrotropical Culicoides. C. tropicalis Kieffer, 1913, is the subgenotype. C. vagus is made a synonym of C. dutoiti while apomorphies common to the remaining species camicasi, congolensis, dispar, moucheti, pellucidus, perettii, tauffliebi and vicinus are discussed. The broad similis group of Cornet & Chateau (1971), under which these 10 species of Synhelea were originally assembled, is not only maintained but expanded by a further 11 species. Various distributional and descriptive data pertinent to Synhelea throughout the Afrotropical region are tabulated, and keys to adult males and females presented. C. perettii and C. moucheti are new records for South Africa. C. dutoiti, C. perettii and C. tropicalis are recorded for the 1st time from Malawi while C. dutoiti and C. tropicalis are newly recorded from Botswana and Namibia respectively. Where available, notes on larval habitats are given. Synhelea is considered endemic to the Afrotropical region and is briefly differentiated from the 25 subgenera currently recognized worldwide. Numerous illustrations accompany the diagnosis.

Africa, Eastern↗

Health and health care in post-apartheid South Africa: a future vision.

This paper accepts the idea that patterns and distribution of health care and resources are determined by "realpolitik," and that South Africa is at present in the throes of a political revolution, the outcome of which is bound to reflect a considerable degree of "self-determination" of the majority black (African, Asian, and mixed-race) people. It is postulated that the health services-and other pre-determinants of the health of the black people-will be shaped by a mixed socialist-capitalist economy and a socialized or nationalized form of health care service. This is because all the leading players in the revolutionary stakes, especially the exiled African National Congress of South Africa (ANC) and the above-ground United Democratic Front (UDF) and its affiliate, the National Alternative Medical and Dental Association (NAMDA), who are the front-runners, advocate these kind of changes for the future of South Africa, as exemplified in the ANC's Freedom Charter of 1955.Powerful political forces, both inside South Africa and in the Western World, are resisting this outcome, despite it clearly being the democratic will of the people, as shown by all the polls. These reactionary strategies would leave the health of most blacks in South Africa and Namibia little improved over its present status.

Delivery of Health Care↗

[Clinical aspects and therapy of schistosomiasis].

Among 810 parasitologically examined persons (1981) 277 (34%) showed positive findings. The high percentage of parasitisation in foreigners (86%) is to be explained by the in most cases aimed transfer of these patients (215 of the 810 persons). Affection with Schistosoma was recognized in 51 patients at the age of 17-47 years (means = 21.86), without Africans, and stood in the 3rd place of the distribution of frequency of the heterogeneous parasitoses. 49 of these patients came from Mozambique, 1 from Namibia and 1 from Zambia. In 51% S. haematobium was diagnosed, in 22% S. mansoni and in 27% a double infestation with the two forms of parasites. While 80% of the patients with affection of S. haematobium showed clinical symptoms (macrohaematuria, cystitis complaints), there were only 44% among the S. mansoni group. 47 patients were treated with Niridazole (Ambilhar, 25 mg/kg, 5-7 days), 2 patients with Praziquantel (Biltricide, 40 mg/kg, 1 day) and 2 other patients with Praziquantel after unsuccessful Niridazole therapy. Follow-up examinations were performed after 1, 3, 6 and 12 months. In 17% of the patients treated with Niridazole the primary treatment did not lead to cure; side effects (abdominal pain, nausea, vertigo) were observed in 55%. Praziquantel was tolerated very well. During a control period of 1 year living eggs of Schistosoma were no more proved.

Adolescent↗