Mycobacterium tuberculosis in children with human immunodeficiency virus type 1 infection.

A retrospective study was conducted at the Childrens Hospital Center at Jackson Memorial Hospital in Miami, FL, to evaluate the natural history of Mycobacterium tuberculosis infection in nine children with vertically acquired human immunodeficiency virus type 1 infection. The patients' ages ranged from 6 months to 7 years (median age, 42 months). Common presenting symptoms included prolonged fever, cough and anorexia. Only one patient had a positive tuberculin test. Five patients evidenced only pulmonary disease, three patients had pulmonary and extrapulmonary disease and one patient developed extrapulmonary tuberculosis (mastoiditis) and pulmonary interstitial disease that could not be attributed to mycobacterial infection because of lack of information. Organisms isolated before January, 1989, were susceptible to isoniazid and rifampin whereas isolates from three patients cultured after that time were resistant to multiple antituberculosis drugs. The median survival time after M. tuberculosis diagnosis for all children was 20 months. Our study suggests that children with human immunodeficiency virus type 1 infection who have tuberculosis have an increased risk for extrapulmonary disease. A high index of suspicion for the diagnosis of M. tuberculosis should be maintained in human immunodeficiency virus type 1-infected children with prolonged fever and respiratory symptoms. In areas of high endemicity of multidrug-resistant organisms, therapy with a broader panel of drugs may need to be instituted until susceptibility testing becomes available.     

Prevalence of human immunodeficiency virus infection in children with tuberculosis

This prospective study was carried out in the pediatric ward and outpatient department of a tertiary care centre to estimate the prevalence of HIV seropositivity in children with tuberculosis. Two hundred and fifty consecutive children below 12 years of age with (pulmonary and extrapulmonary) tuberculosis diagnosed between March 1999 and July 2000 were screened for HIV infection. A patient was labeled as HIV positive if two consecutive ELISA tests were found positive using different antigen/principle. Supplemental western blot test was also done. Parents of seropositive children were also screened for HIV infection and tuberculosis. Total 5 cases were HIV positive giving a seroprevalence of 2%. All the five patients had disseminated tuberculosis. We suggest regular screening of children with disseminated/miliary tuberculosis for HIV co-infection.     

Risk factors for human immunodeficiency virus infection in Ethiopian children with tuberculosis.

BACKGROUND: Separate risk factors for HIV infection and for tuberculosis (TB) are well-studied, but it is unclear whether these risk factors still apply in the new epidemiologic situation of dual infection. This study examines risk factors associated with seropositivity for HIV in Ethiopian children with clinical TB. METHODS: A prospective, controlled study of children with TB diagnosed in Addis Ababa from December 11, 1995, to January 28, 1997, in which HIV-positive children were compared with HIV-negative children with regard to sociodemographic background, previous medical history and vaccination. RESULTS: HIV prevalence among children with clinical TB was 11.2%. High educational status of mothers, low age, loss of one or two parents and earlier Calmette-Guérin bacillus (BCG) vaccination of the child were factors independently related to HIV infection. CONCLUSION: Factors associated with HIV infection among children with clinical TB include higher education of parents, higher income and better living conditions. The HIV epidemic might thus modify traditional risk factors for tuberculosis. It might also decrease the overall effect of BCG vaccination given that BCG did not provide protection in children infected with HIV. An expected increase of dually infected children who are younger, more in need of hospitalization and often lacking one or both parents will put an additional burden on the Ethiopian health care system.     

Pediatric human immunodeficiency virus infection and the acquired immunodeficiency syndrome. A health care crisis of children and families

The number of children infected with the human immunodeficiency virus (HIV) is rapidly increasing. Most infected children acquire their infection by vertical transmission from an infected mother, and this increase in the number of infected children reflects a similar increase in the number of infected women. Many features of HIV infection in children differ from those in adults, and it is important for the physician to be familiar with the varied presentations of pediatric HIV infection. Transmission of HIV during adolescence, by sexual contact and illicit drug use, is also a growing problem, accounting for most cases of acquired immunodeficiency syndrome (AIDS) seen in young adults in their 20's. The HIV-infected child represents only one member of a family affected by the HIV virus; frequently, multiple other members of the family are infected as well. These families are predominantly underpriviledged, coming from inner city minority populations with limited access to medical care and social service support. Pediatric AIDS is a preventable disease, by the prevention of HIV infection in women. In short term, it is likely that education will have the greatest impact on altering the course of the AIDS epidemic. Most infected children are cared for in a limited number of public inner city hospitals, and the ability of these hospitals to continue to provide adequate care will be threatened by the rising number of cases. A multidisciplinary approach to providing care for these children and their families is essential, with the primary care physician coordinating this effort. Rapid advances in the treatment of HIV and its associated opportunistic diseases raise difficult questions concerning the access of women, including pregnant women, and children to clinical trials of investigational agents. The commitment of individual health care workers and an increased level of financial support will be necessary to provide the care that these children and their families require and deserve.     

Pediatric admissions with human immunodeficiency virus infection at a regional hospital in Soweto, South Africa

The prevalence and clinical spectrum of HIV disease in hospitalized African children has not been adequately characterized in Southern Africa. This study aimed to determine the prevalence and disease profile of HIV infected children under 5 years of age admitted to a tertiary care hospital in Soweto, South Africa and to assess the impact of pediatric HIV on health services. Over a 6-month period, serial pediatric admissions to one of the children's wards were screened for HIV. Data on demographics and disease profile were recorded for all patients. A total of 549 patients were admitted, of whom 507 were tested for HIV; 29.2 per cent were considered to be truly infected. Previous admissions to hospital were more frequent in the HIV infected group, 48 per cent compared with 20.4 per cent of HIV uninfected children (p < 0.01), with a median length of stay of 8 days compared with 6 days (p < 0.01). There were more malnourished children in the HIV infected group (65.8 per cent compared with 33.1 per cent) (p < 0.01) and more died (17 per cent compared with 4.6 per cent) (p < 0.01). The most common reasons for admission in all children were infectious diseases such as pneumonia and gastroenteritis (85 and 31.9 per cent compared with 51 and 22.5 per cent, respectively in the HIV infected and uninfected groups, p < 0.01 and p < 0.03). It was concluded that pediatric HIV infection accounts for almost a third of childhood admissions to this hospital and has become a significant burden on the health service.     

Human immunodeficiency virus infection in children hospitalised with tuberculosis

The impact of HIV infection on clinical presentation and outcome of tuberculosis (TB) was studied in children hospitalised at the Brooklyn Hospital for Chest Diseases (BCH), Cape Town over the 2-year period January 1998 to December 1999. Clinical data were extracted from a prospectively compiled patient register. Of 261 children with TB, 114 (median age 24 mths) were not HIV-infected and 36 (median age 23 mths) were HIV-infected. The HIV status of 111 children (median age 37 mths) was not determined. Pulmonary TB with or without extrapulmonary TB occurred in 97 (85%) children who were not HIV-infected, 35 (97%) HIV-infected children and 87 (78%) of those not tested (p = 0.025). A tuberculin reaction > or = 15 mm was elicited in ten (31%) of 32 HIV-infected children, 76 (72%) of 106 non-HIV-infected and 62 (71%) of those not tested (p < 0.001). Mycobacterium tuberculosis was cultured from 116 (49%) of 238 children and drug sensitivity was evaluated in 79. Nine isolates (11%) were resistant to isoniazid (INH) and 11 (14%) to INH and rifampicin (RMP). Two HIV-infected children treated previously in BCH for drug-sensitive TB were re-admitted with INH and RMP resistance. Two (2%) non-HIV-infected children, six (17%) HIV-infected children and one (1%) child with undetermined HIV status died (p < 0.001).     

Pseudomonas infections in children with human immunodeficiency virus infection.

Thirteen bacteremias and 25 nonbacteremic infections caused by Pseudomonas spp. occurred in 22 of 236 children with human immunodeficiency virus infection with a rate of infection of 0.098 (bacteremia, 0.030) per patient year. Four patients were neutropenic (less than 500/microliters). Central venous catheter (CVC)-related infections were most frequent (n = 20) followed by otitis externa (n = 6) and pneumonia (n = 5). Pseudomonas aeruginosa was the most common isolate and caused both CVC-related and CVC-unrelated infections, whereas other Pseudomonas spp. and Xanthomonas maltophilia were almost exclusively associated with CVC-related infections. The children who received appropriate therapy had a favorable outcome. In 7 CVC-related infections (35%) the catheter was removed. Pseudomonas spp. are of increasing importance in human immunodeficiency virus-infected children causing significant morbidity and increased hospitalization. These infections may be life-threatening if appropriate therapy is not vigorously initiated.     

Perinatally acquired human immunodeficiency virus infection

Following a brief introduction to the history of AIDS and the global impact of the AIDS epidemic, the important, yet difficult to research role of perinatally transmitted human immunodeficiency virus (HIV) from mother to infant is pointed out. Approximately 80% of all HIV infections in children in the US and Europe stem from perinatal transmission; similar rates are expected for sub-Saharan Africa and the Caribbean. Accordingly, current understanding of the epidemiology of HIV transmission from mothers to children is reviewed. While obstacles exist to AIDS surveillance, determining the frequency and timing of perinatal HIV transmission, planning treatment trials, and clinical treatment, information has been gained over the years from AIDS surveillance data, HIV seroprevalence surveys, and studies of HIV transmission and disease progression. The focus here is primarily upon information obtained since early 1988, methodological issues, and future research priorities. The scope of the HIV epidemic in the US and Europe is considered, with sections on the epidemiology of AIDS in women and children, the prevalence and incidence of HIV infection therein, and other surveillance approaches. Epidemic scope in Africa, the Caribbean, South America, Asia, and the Pacific is also addressed. Discussion also includes rates, risk factors, and mechanisms of transmission, as well as incubation period and clinical presentations of morbidity and mortality.     

GB virus C infection in children with perinatal human immunodeficiency virus infection

BACKGROUND: GB virus C (GBV-C) infection occurs in 20-40% of human immunodeficiency virus (HIV)-infected adults, and coinfection is associated with improved HIV disease outcome. METHODS: To determine the prevalence of GBV-C infection in children who were perinatally infected with HIV, we conducted a cross-sectional prevalence survey in a cohort of perinatally infected HIV-positive children selected from a large, multicenter observational protocol. A blood specimen was obtained and tested for GBV-C viremia with the use of a qualitative GBV-C RNA assay and screened for past GBV-C infection with enzyme-linked immunosorbent assay to detect antibodies to the GBV-C envelope protein E2 (E2 Ab). RESULTS: The 354 children who participated in the substudy were relatively healthy, with a median CD4 of 784 cells/mm and median HIV-1 viral load of 1055 copies/mL. The prevalence of GBV-C viremia was 20 of 353 or 5.7% (95% confidence interval, 3.5-8.6%), and the prevalence of E2 Ab was 12 of 354 or 3.4% (95% confidence interval, 1.8-5.8%). GBV-C viremic patients were older than patients without past GBV-C infection (median age, 12.8 years versus 10.7 years). Median CD4 lymphocyte counts were highest in subjects without GBV-C infection and lowest in those with E2 Ab. CONCLUSIONS: GBV-C prevalence rates are lower in children with perinatal HIV infection than those reported for HIV-infected adults. With the exception of evidence that GBV-C viremic children had lower rates of Centers for Disease Control and Prevention HIV disease category C disease before GBV-C testing, we did not find evidence of improved HIV disease outcome in coinfected patients, but the number of HIV/GBV-C-coinfected children was small.     

儿童人类免疫缺陷病毒/艾滋病的治疗

在过去的 15年 ,儿童人类免疫缺陷病毒 (humanimmun odeficiencyvirus,HIV)治疗策略有了很大变化 ,从单一用药发展到 3类抗逆转录病毒药物的联合治疗。高效抗逆转录病毒治疗 (highactiveanti retroviraltherapy ,HAART)俗称“鸡尾酒疗法” ,是指抗HIV药物的联合治疗 ,包括蛋白酶抑制剂(proteaseinhibitor ,PI)在内的 2种或多种药物的联合应用[1,2 ] 。联合用药比单一用药更能迅速有效地控制HIV复制 ,减少剂量及毒副作用 ,防止耐药株产生。虽然儿童与成人HIV感染的发病机制及抗逆转录病毒药物应用的病毒学及免疫学原则是相似的 ,但对…     

Mucocutaneous disease in pediatric human immunodeficiency virus infection

Children with HIV infection may develop a wide variety of infectious and inflammatory diseases of the skin. These disorders are often more severe and more difficult to treat than in the healthy child. In some cases, disorders of the skin or mucous membranes may provide an early clue to the presence of pediatric HIV infection.     

Delayed recognition of human immunodeficiency virus infection in preadolescent children.

Thirty-two (18%) of 181 children cared for at our institution who were infected with the human immunodeficiency virus type 1 (HIV-1) were first seen, and HIV was diagnosed, when they were 4 years of age and older. Initial complaints or diagnoses for these children included the following: hematologic disorders (5) (3 idiopathic thrombocytopenic purpura, 1 neutropenia, 1 anemia); recurrent bacterial infections (10); Pneumocystis carinii pneumonia (3); developmental delay (1); skin disorders (2) (1 genital wart, 1 chronic zoster); weight loss (3); malignancy (1); and nephropathy (1). Eight children were referred for evaluation because of maternal HIV-1 infection. The risk factors for HIV-1 infection included maternal/perinatal exposure (22), perinatal blood transfusion (6), blood transfusion during infancy (2), and sexual abuse (2). Ten (31%) of the 32 children have subsequently died. The longest survival from perinatal infection was 12 years. HIV-1 infection in children can result in a prolonged clinical latency and can masquerade as other pathologic conditions. The absence of clinical symptoms in older children at risk for HIV-1 infection should not deter HIV testing.     

Immune complexes in pediatric human immunodeficiency virus infection

Circulating immune complexes (CIC) were analyzed in a cohort of 30 children infected with the human immunodeficiency virus. Elevated CIC were detected by the C1q assay in 70% (21/30) of all patients and by the Raji cell assay in 93% (28/30) of all patients. While only less than one third of patients with elevated CIC had free serum antibodies to Epstein-Barr virus, 80% (16/20) of them had detectable antibodies to Epstein-Barr virus associated with CIC. Enriched CIC in human immunodeficiency virus-infected children contained low levels of complement. These findings document that, as an expression of the humoral immunodeficiency, CIC in human immunodeficiency virus-infected children are deficient in complement and can thus be underestimated if complement-precipitating methods are used for their detection.