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עמוד בית
Sun, 16.03.25

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September 2005
D. Golan, M. Zagetzki and S. Vinker
Background: Acute respiratory viral infections are minor self-limited diseases. Studies have shown that patients with ARVI[1] can be treated as effectively by non-physician practitioners as by physicians.

Objectives: To examine whether a military medic, using a structured questionnaire and an algorithm, can appropriately triage patients to receive over-the-counter medications and refer more complicated cases to a physician.

Methods: The study group comprised 190 consecutive soldiers who presented to a military primary care clinic with symptoms of ARVI. Using a questionnaire, a medic recorded the patient's history and measured oral temperature, pulse rate and blood pressure. All patients were referred to a doctor. Physicians were “blind” to the medic’s anamnesis and to the algorithm diagnosis. We compared the medic’s anamnesis and therapeutic decisions to those of the doctors.

Results: Patients were young (21.1 ± 3.7 years) and generally healthy (93% without background illness). They usually had a minor disease (64% without fever), which was mostly diagnosed as viral ARVI (83% of cases). Ninety-nine percent were also examined by a physician. According to the patients' data, the medics showed high overall agreement with the doctors (83–97.9%). The proposed algorithm could have saved 37% of referrals to physicians, with a sensitivity of 95.2%. Had the medics been allowed to examine the pharynx for an exudate, the sensitivity might have been 97.6%.

Conclusions: Medics, equipped with a questionnaire and algorithm but without special training and without performing a physical examination, can appropriately triage patients and thereby reduce the number of referrals to physicians.

________________

[1] ARVI = acute respiratory viral infection

April 2005
E. Bamberger, R. Madeb, J. Steinberg, A. Paz, I. Satinger, Z. Kra-0z, O. Natif and I. Srugo
Background: Although the current literature attributes most cases of hematospermia to an infectious agent, identification of the specific pathogens involved has been limited.

Objectives: To determine the prevalence of different pathogens in patients presenting to our sexually transmitted disease clinic with hematospermia.

Methods: Between January 1999 and January 2000, 16 patients presented to our STD[1] clinic with hematospermia after other non-infectious pathologies had been excluded by a referring physician. After obtaining informed consent, subjects completed a questionnaire addressing symptoms and sexual behavior. First void urine samples, as well as genitourinary and serum specimens were tested for Chlamydia trachomatis, Ureaplasma urealyticum and Herpes simplex virus. Standard bacterial cultures were also performed.

Results: Laboratory testing detected a pathogen in 12 of the 16 males presenting with hematospermia. The sexually transmitted pathogens detected were Herpes simplex virus in 5 patients (42%), Chlamydia trachomatis in 4 (33%), Enterococcus fecalis in 2 (17%), and Ureaplasma urealyticum in 1 (8%). In all cases in which a pathogen was identified, the appropriate antimicrobial agent was administered. Symptoms resolved for each patient following antimicrobial therapy. During a 1 year follow-up, all 12 patients remained free of disease.

Conclusions: Recent advances in microbiologic diagnostic techniques have facilitated the detection of pathogens in patients with hematospermia, thereby enhancing the efficacy of treatment.

____________________

[1] STD = sexually transmitted disease

Y. Schlesinger, D. Reich, A.I. Eidelman, M.S. Schimmel, J. Hassanim and D. Miron
Background: The incidence of congenital cytomegalovirus in Israel has never been determined, either in general or in relation to various population subgroups. We recently proved the utility of newborn urine polymerase chain reaction as a screening tool for congenital CMV[1].

Objectives: To define the incidence of congenital CMV infection in two different subpopulations, as a model for the entire population of Israel.

Methods: Urine specimens were randomly collected from 2,000 newborns in Shaare Zedek Medical Center, Jerusalem, and HaEmek Medical Center, Afula (1,000 specimens each). These hospitals have many characteristic differences, presumably representing the diverse population of Israel. Urine specimens were subjected to a CMV PCR[2] reaction and positive specimens were validated by urine viral culture. Maternal seroprevalence was determined in a representative sample of the mothers in each hospital. Epidemiologic characteristics of the mothers were extracted from hospital records and compared.

Results: The population in Shaare Zedek Medical Center was mostly Jewish (95.8%) and urban (87.0%), as compared to that of HaEmek Medical Center (49.2% and 61.0%, respectively, P < 0.01). Nevertheless, CMV seroprevalence was similar: 81.5% and 85%, respectively. Ten (1.0%) and 4 (0.4%) newborns, respectively, were found to have congenital CMV infection (not significant).

Conclusions: The combined incidence of congenital CMV infection in the study population was 0.7% (95% confidence interval 0.3–1.0%). If this rate is extrapolated to the entire population of Israel, then a total of 945 cases of congenital CMV can be expected among the 135,000 annual deliveries. A nationwide screening program for congenital CMV should be considered.

________________

[1] CMV = cytomegalovirus

[2] PCR = polymerase chain reaction

February 2005
E. Broide, M. Shapiro, I. Boldur, E. Klinowski, A.N. Kimchi, Y. Gluskin and E. Scapa

Background: Salmonella species commonly produce acute gastroenteritis. The clinical course may be affected by factors such as age, immunosuppression, and underlying disorders.

Objectives: To investigate clinical and laboratory differences in the infected population and the risk of complications according to the different age groups.

Methods: The records of 295 patients with positive cultures for Salmonella were divided into six age groups and reviewed retrospectively for the years 1994–1997. Demographic, clinical and laboratory data, extraintestinal manifestations, underlying disorders, organism source, and susceptibilty to antibiotics were analyzed.

Results: We found that 88.5% were only stool positive, 9.2% had positive blood cultures, and 2.4% were positive in both blood and stool; 3.6% were found to have underlying disorders. Anemia, disturbed liver function tests and hypoalbuminemia were the most common pathologic laboratory findings. Salmonella serogroups B and D were isolated most frequently. The rate of positive blood cultures increased significantly during the years, as did resistance to ampicillin and trimethoprim-sulfamethoxazole. Salmonella infection has two peaks of incidence: at ages 1–5 and 15–65 years. Bacteremia was prominent in the extreme ages.

Conclusions: Salmonella infection has a different clinical presentation in different age groups. The significant increase in the rate of bacteremia in the extreme age groups necessitates a different attitude and management for these heterogeneous patient populations.

October 2004
N.R. Kahan, E. Kahan, D-A. Waitman and D.P. Chinitz

Background: Until recently trimethoprim-sulfamethoxazole was the drug recommended in the Leumit Health Fund for the empiric treatment of uncomplicated urinary tract infection in women. However, due to increased uropathogen resistance to this drug, the fund has designated nitrofurantoin as its new drug of choice.

Objectives: To evaluate the potential economic impact of implementing this new pharmaco-policy.

Methods: Using data derived from the electronic patient records of the Leumit Health Fund we identified all non-recurrent cases of women aged 18–49 with a diagnosis of acute cystitis or UTI[1] without risk factors for complicated UTI and empirically treated with antibiotics throughout 2003. The final sample comprised 5,489 physician-patient encounters. The proportion of cases treated with each individual drug was calculated, and the excess expenditure due to non-adherence to the new guideline from the perspective of the health fund was evaluated using 5 days of therapy with nitrofurantoin as the reference treatment.

Results: Ofloxacin was the most frequently prescribed drug (30.24%), followed by TMP-SMX[2] (22.43%), cephalexin (15.08%), and nitrofurantoin (12.59%). The observed net aggregate drug expenditure was 2.3 times greater than expected had all cases been treated with nitrofurantoin according to the guideline duration of 5 days. The cost of treatment in 53% of the cases exceeded the expected cost of the guideline therapy.

Conclusions: Successful implementation of the new drug policy will likely improve quality of care and reduce costs to the health fund.






[1] UTI = urinary tract infection

[2] TMP-SMX = trimethoprim-sulfamethoxazole


April 2004
A. Ya'ari, C.L. Jaffe and B-Z. Garty

Background: Visceral leishmaniasis was first reported in Israel (then Palestine) in 1929. In the 1960s and 1970s, it was endemic to northern Israel, but only partial data about the disease have been gathered since then.

Objective: To investigate the epidemiologic trends of visceral leishmaniasis in Israel from 1960 to 2000, and to delineate some clinical features of the infection.

Methods: Data were collected from hospital charts, scientific publications, and reports of the Ministry of Health and the Kuvin Center for the Study of Infectious and Tropical Diseases.

Results: During the last four decades, 87 cases of visceral leishmaniasis were diagnosed in Israel, 76 of them (87%) in children. All 54 patients diagnosed in the 1960s occurred in the northern part of the country. The rate of infection declined significantly in the 1970s (5 cases) and then increased slightly in the 1980s (11 cases) and 1990s (17 cases). More than 50% of the cases in the 1990s were in central Israel. Children accounted for 100% of cases in the 1960s but only 58% in the 1990s. The main clinical features of the patients diagnosed in the last decade were fever, weight loss, hepatosplenomegaly and pancytopenia. Three of the adults were co-infected with human immunodeficiency virus.

Discussion: The decline in the incidence of visceral leishmaniasis in the 1970s and the slight increase in the 1980s and 1990s can be attributed to changes in the animal reservoir and vectors, and in the immunity status of part of the population exposed to Leishmania.

Conclusions: Visceral leishmaniasis has reemerged in Israel. This mandates better control of the animal reservoir and vectors and increased awareness of this infection.

December 2003
J-L. Touraine, K. Sanhadji and R. Sembeil

Background: The humanized SCID mouse model is an attractive tool for testing gene therapy to combat human immunodeficiency virus infection in vivo.

Objectives: To devise a more specific gene therapy directed against HIV, replacing the formerly used interferon with either soluble CD4 molecule immunoadhesin (sCD4-IgG) and/or anti-gp41 monoclonal antibody (2F5), or negative transdominants (Tat, Rev).

Methods: Human monocytoid cell line (U937) was transfected with IFNa[1], b or g genes. 3T3 murine fibroblastic cell line was transfected with sCD4-IgG or 2F5, or both genes, and a human T4 cell line (CEM) was grafted to SCID mice. Negative transdominant genes (Tat, Rev or both) were also transduced in CEM T cell line. Animals were then challenged with HIV-1[2]. Viral load was followed.

Results: IFNa or b were potent anti-HIV, reducing viral load in vivo and inhibiting reverse transcriptase activity in human-removed cells from animals. sCD4-IgG immunoadhesin and gp41 monoclonal antibody resulted in a dramatic reduction of HIV-1 cellular and plasmatic viral load in humanized SCID mice. The simultaneous introduction of negative Tat and Rev genes resulted in a synergistic inhibition of HIV-1 replication in vivo.

Conclusions: Despite the marked reduction of HIV-1 propagation by IFN genes or by negative Tat and Rev transdominants, the gene therapy using soluble CD4 immunoadhesin or anti-gp41 was a more efficient preventive treatment against HIV infection.






[1] IFN = interferon



[2] HIV = human immunodeficiency virus


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