| survey to estimate prevalence of leptospira interrogans infection in mature cattle in the united states. | a total of 5,142 kidney tissue samples and 5,111 serum samples from mature cattle in 49 states and puerto rico were collected at slaughter. age of cattle ranged from 1 to 16 years (mean, 6.6 years). leptospires were isolated from 88 (1.7%) kidney tissues, and 2,493 (49%) sera contained antibodies against 1 or more of 12 leptospira interrogans serovars. leptospires were observed by immunofluorescence in 41 (0.8%) kidney tissues. using agglutinin-absorption tests, 73 (83%) isolates were identified ... | 1991 | 1785719 |
| status of state-federal hog cholera eradication program. | | 1964 | 5217518 |
| [ecology of dengue and aedes aegypti. preliminary research. 2]. | | 1984 | 6729600 |
| serotypes of previously unclassified isolates of erysipelothrix rhusiopathiae from swine in the united states and puerto rico. | serotypes of 46 previously unclassified isolates of erysipelothrix rhusiopathiae from porcine tissues in the united states and serotypes of 31 isolates of the organism from porcine tissues received from puerto rico were determined. the 46 isolates from the united states were classified in serotype 21. four isolates (from georgia, minnesota, ohio, and oklahoma) were tested and found to be pathogenic for swine. serotypes 1 (subtypes 1a and 1b), 2, 5, 6, and 21 were found in porcine tissues from pu ... | 1981 | 6791537 |
| rabies surveillance in the united states during 1998. | during 1998, 49 states, the district of columbia, and puerto rico reported 7,961 cases of rabies in nonhuman animals and 1 case in a human being to the centers for disease control and prevention, a decrease of 6.5% from 8,509 cases in nonhuman animals and 4 cases in human beings reported in 1997. more than 92% (7,358 cases) were in wild animals, whereas > 7.5% (603 cases) were in domestic species (compared with 93% in wild animals and 7% in domestic species in 1997). decreases were evident in al ... | 1999 | 10613210 |
| rabies surveillance in the united states during 2001. | during 2001, 49 states and puerto rico reported 7,437 cases of rabies in nonhuman animals and 1 case in a human being to the centers for disease control and prevention, an increase of < 1% from 7,364 cases in nonhuman animals and 5 human cases reported in 2000. more than 93% (6,939 cases) were in wild animals, whereas 6.7% (497 cases) were in domestic species (compared with 93.0% in wild animals and 6.9% in domestic species in 2000). the number of cases reported in 2001 increased among bats, cat ... | 2002 | 12494966 |
| frequency of rubella antibody among pregnant women and other human and animal populations. a report from the collaborative study of cerebral palsy. | | 1964 | 14117317 |
| mites of the family listrophoridae in puerto rico. | | 1970 | 5415458 |
| abundance and distribution of legionellaceae in puerto rican waters. | waters in marine and freshwater areas of puerto rico were analyzed for the presence of legionella spp. by direct fluorescent antibody assay with guinea pig confirmation. several species, including l. bozemanii, l. dumoffii, l. gormanii, l. longbeachae, l. micdadei, and l. pneumophila, were widely distributed among all sites. legionellaceae, including l. pneumophila, were found in high densities in water collected in the rain forest from epiphytes in trees 30 ft. (about 9.25 m) above the ground. ... | 1987 | 3314710 |
| legionella spp. in puerto rico cooling towers. | water samples from air conditioning cooling towers receiving different treatment protocols on five large municipal buildings in san juan, p.r., were assayed for various legionella spp. and serogroups by using direct immunofluorescence. several water quality parameters were also measured for each sample. guinea pigs were inoculated with water samples to confirm pathogenicity and recover viable organisms. legionella pneumophila serogroups 1 to 6, l. bozemanii, l. micdadei, l. dumoffii, and l. gorm ... | 1988 | 3202625 |
| preparation and standardization of antigens useful in the diagnosis of swine trichinellosis. | | 1985 | 2422076 |
| willingness of minorities to participate in biomedical studies: confirmatory findings from a follow-up study using the tuskegee legacy project questionnaire. | the purposes of this analysis were to compare the self-reported willingness of blacks, puerto-rican hispanics and whites to participate as research subjects in biomedical studies, and to determine the reliability of the tuskegee legacy project questionnaire (tlp). | 2007 | 17913117 |