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The epidemic of cholera that began in Peru in January, 1991, marked the first such epidemic in South America this century. Subsequently, over 533,000 cases and 4700 deaths have been reported from nineteen countries in that hemisphere. We investigated the epidemic in Trujillo, the second largest city in Peru. Trujillo's water supply was unchlorinated and(More)
Transmission of rabies to man by vampire bats has been known for 60 years but there have been few reports of the features of rabies transmitted in this way. These aspects of the disease were investigated during an outbreak in Peru in early 1990. Between Jan 1 and April 30, 1990, 29 (5%) of 636 residents of the two rural communities in the Amazon Jungle in(More)
Projection (or dimensionionality reduction) techniques have been used as a means to handling the growing dimensionality of data sets as well as providing a way to visualize information coded into point relationships. Their role is essential in data interpretation and simultaneous use of different projections and their visualizations improve data(More)
We introduce a point-based algorithm for computing and rendering stream surfaces and path surfaces of a 3D flow. The points are generated by particle tracing, and an even distribution of those particles on the surfaces is achieved by selective particle removal and creation. Texture-based surface flow visualization is added to show inner flow structure on(More)
Nowadays, medical imaging procedures provide a great variety of data obtained with different modalities. To offer a deeper insight into this data the simultaneous visualiza-tion of these images, not regarding their source, must be provided. One example is the field of functional brain imaging, where the activation of brain regions during cognitive tasks is(More)
The interactive deformation and visualization of volumetric objects is still a challenging problem for many application areas. We present a novel integrated system which implements physically-based deformation and volume visualization of tetra-hedral meshes on modern graphics hardware by exploiting the last features of vertex and fragment shaders. We(More)
A household survey in 1991, at the onset of the Latin American cholera epidemic, investigated high attack rates in Trujillo, Peru, and determined the association between blood group O and severe cholera. Of 463 persons in 69 households, 173 (37%) reported diarrhea, 21% required rehydration therapy, and 4% were hospitalized; these treatment requirements(More)
A family with hereditary amyloidosis characterized by peripheral neuropathy and cardiomyopathy is described. Lack of eye involvement sets their disease apart from the Indiana/Swiss familial amyloidotic polyneuropathy type II. The disease is of late onset; affected members die of cardiomyopathy after age 60. The late onset and lack of clinically significant(More)