| Full text | |
| Author(s): |
Portari Mancini, Dalva Assunao
[1]
;
Pietro Pereira, Aparecida Santo
[1]
;
Zucatelli Mendonca, Rita Maria
[1]
;
Nagamori Kawamoto, Adelia Hiroko
[1]
;
Barbosa Alves, Rosely Cabette
[1]
;
Pinto, Jose Ricardo
[1]
;
Mori, Enio
[2]
;
Richtzenhain, Leonardo Jose
[2]
;
Mancini-Filho, Jorge
[3]
Total Authors: 9
|
| Affiliation: | [1] Butantan Inst, Div Sci Dev, Virol Lab, Sao Paulo - Brazil
[2] Univ Sao Paulo, Fac Vet Med & Zootech, Dept Prevent Vet Med & Anim Hlth, Sao Paulo - Brazil
[3] Univ Sao Paulo, Fac Pharmaceut Sci, Dept Food Sci & Expt Nutr, Sao Paulo - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Revista do Instituto de Medicina Tropical de São Paulo; v. 56, n. 3, p. 191-195, MAY-JUN 2014. |
| Web of Science Citations: | 0 |
| Abstract | |
Equines are susceptible to respiratory viruses such as influenza and parainfluenza. Respiratory diseases have adversely impacted economies all over the world. This study was intended to determine the presence of influenza and parainfluenza viruses in unvaccinated horses from some regions of the state of São Paulo, Brazil. Blood serum collected from 72 equines of different towns in this state was tested by hemagglutination inhibition test to detect antibodies for both viruses using the corresponding antigens. About 98.6% (71) and 97.2% (70) of the equines responded with antibody protective titers (≥ 80 HIU/25µL) H7N7 and H3N8 subtypes of influenza A viruses, respectively. All horses (72) also responded with protective titers (≥ 80) HIU/25µL against the parainfluenza virus. The difference between mean antibody titers to H7N7 and H3N8 subtypes of influenza A viruses was not statistically significant (p > 0.05). The mean titers for influenza and parainfluenza viruses, on the other hand, showed a statistically significant difference (p < 0.001). These results indicate a better antibody response from equines to parainfluenza 3 virus than to the equine influenza viruses. No statistically significant differences in the responses against H7N7 and H3N8 subtypes of influenza A and parainfluenza 3 viruses were observed according to the gender (female, male) or the age (≤ 2 to 20 years-old) groups. This study provides evidence of the concomitant presence of two subtypes of the equine influenza A (H7N7 and H3N8) viruses and the parainfluenza 3 virus in equines in Brazil. Thus, it is advisable to vaccinate equines against these respiratory viruses. (AU) | |
| FAPESP's process: | 11/03234-7 - Serological and molecular characterization of equine influenza virus (EIV) in horses from the São Paulo State |
| Grantee: | Leonardo José Richtzenhain |
| Support Opportunities: | Regular Research Grants |