| epidemiology and cost of infection with human parainfluenza virus types 1 and 2 in young children. | to determine the morbidity, costs, and epidemiological features of lower respiratory tract infections (lris) due to human parainfluenza virus types 1 and 2 (hpiv-1 and hpiv-2), we evaluated 1,213 children < 6 years of age who were seen for lris in the emergency room of the children's hospital of wisconsin and/or were admitted to the hospital for lris during the fall quarter of 1991. the age, sex, race, and respiratory syndrome were recorded for each child; 158 patients (13%) had respiratory samp ... | 1994 | 8075269 |
| non-influenza respiratory viruses may overlap and obscure influenza activity. | to report the number and timing of influenza a isolates, as well as overlapping respiratory viruses. co-circulating respiratory viruses may obscure the determination of influenza activity. | 1999 | 10484251 |
| two distinct human parainfluenza virus type 1 genotypes detected during the 1991 milwaukee epidemic. | the extent of genetic and antigenic variation found in a population of human parainfluenza virus type 1 (hpiv-1) during a single local epidemic was investigated. fifteen hpiv-1 strains isolated from children in 1991 were analyzed. nucleotide sequence variation in the hemagglutinin-neuraminidase protein (hn) gene demonstrated two distinct genotypes (genotypes c and d). unique patterns were identified involving 62 nucleotide and 10 amino acid positions. these patterns represented 40% of all mutati ... | 1996 | 8904440 |