The reports about the frequency of intestinal protozooses found in humans who live in different localities of the Mexican Republic, are in general uncertain and not trustworthy, possibly because very few and poor epidemiological surveys have been undertaken in the country. However, with the few trustful studies carried out (1981 to 1991), it is possible in Mexico, to verify that amibiasis, giardiasis and criptosporidiosis are present with significant percentages of infection: 30.6, 22.3 and 39.3% respectively. With the summary of the researches analyzed in this article, one can conclude that human infections by intestinal protozoa in the Mexican Republic, at the present time, are almost as frequent as in past decades. This occurs because still remain the factors that contribute to the persistence and spreading of intestinal parasites, such as fecalism, poor hygienic and alimentary habits, within a deficient environmental sanitation.

Adolescent↗

PubMedDate not supplied

[Histopathological changes produced in mice by Mexican strains of Trypanosoma cruzi].

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Chagas Disease↗

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[Intestinal helminthiasis in the Mexican Republic].

Very few uncertain and not trustworthy reports about the frequency of intestinal helminthiases found in humans have been made in México. However, with the few trustful studies carried out from 1981 to 1992, it is possible in México to verify that ascariasis, trichuriasis, hookworm infection and hymenolepiasis are present with significant percentages of infected people 11.2%, 1.7%, 0.15% and 1.8%, respectively. With the information obtained from the researches analyzed in this article, one can conclude that human infections by intestinal helminths in México, at the present time are almost as frequent as in past decades. Without any doubt, this occurs because still remain the factors that contribute to the persistence and spreading of the intestinal helminths, such as fecalism, poor hygienic and alimentary habits within deficient environmental sanitary conditions.

Adolescent↗

PubMedDate not supplied

[Microsporidiosis: current state of a new parasitosis].

Protozoa of the order Microsporida have become regarded as causes of several pathologies in patients with severe immunodeficiencies. Apparently they are transmitted to the human through fecalism, but also the respiratory route has been considered. People most affected are young males infected with the human immunodeficiency virus. The most important genera are: Enterocytozoon, Encephalitozoon, Septata, Nosema and Pleistophora. There are discrepancies about the biology of these parasites and little is known of their behavior in the human host. It is concluded that with the advent of AIDS, many nosological entities by opportunistic organisms, that were not previously considered as human infections are appearing. This work is a review of the literature published from 1959 to 1995, related to epidemiological, clinical, diagnostic and therapeutic aspects.

AIDS-Related Opportunistic Infections↗

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[Infection by Toxoplasma gondii in children with infantile cerebral palsy].

An analytic relationship between positivity of the indirect immunofluorescent test (IIFT) for toxoplasmosis and clinical findings in a population of 328 children with cerebral infantile palsy (CIP) was performed. Children were distributed by age in one of four groups: I (0-2 years); II (3-6 years); III (7-12 years) and IV (13-18 years). One control group of 168 children with no PCI clinical findings was included. 125 sera were positive at 1:64 dilutions. The study of the binomial mother-child of 40 cases rendered 26 mothers with significant titer values. The majority of positive mothers to IIFT correlated with the youngest children (Groups I, II and III), mainly with group I (70.0%), which showed the highest titer ranges. Correlation between positive IIFT and clinical features was as high as 100.0%.

Adolescent↗