Racial Intermarriage in the Americas

Racial intermarriage pairings.

Most studies of racial intermarriage rely on the prevalence of intermarriage to measure the strength of group boundaries, without scrutinizing the nature of intermarriage pairings. Examination of intermarried couples' characteristics reveals (1) that intermarriages and endogamous marriages follow different patterns, and (2) that intermarriage pairings for some groups reflect a generalized racia...

Ethnic intermarriage in New Zealand

Angiostrongyliasis in the Americas

The helminth Angiostrongylus costaricensis Morera & Céspedes, 1971 is endemic to the Americas and is responsible for a pathological abdominal syndrome, caused by the presence of the adult helminth in the mesenteric arteries. This is microscopically characterized by eosinophilic infiltration, vascular abnormality and a granulomatous reaction (GraeffTeixeira et al., 1987). The disease was first r...

Leishmaniasis in the Americas

This parasitic zoonosis is occurring with increasing frequency in several countries of the region. Its pathological manifestations vary both in clinical form and degree of severity depending on the geographical area in which the disease occurs, the parasite species that causes it, and the type of vector involved in transmission. Because multiple vectors and reservoirs exist for each of the vari...

Angiostrongyliasis in the Americas

To the Editor: We read with special interest the article by Hochberg et al. about angiostrongyliasis in Hawaii (1). Angiostrongylus cantonensis meningitis in the Americas was reported by Aguiar et al. in Cuba in 1981 (2), and we have studied this zoonosis during the ensuing 25 years. We agree with the authors about the difficulty in obtaining a specific immunoassay for detection of antibodies t...