Horizontal Transmissibility of Foot-and-Mouth Disease Virus O/JPN/2010 Among Different Animal Species
This study analyzes the horizontal transmissibility of the foot-and-mouth disease virus O/JPN/2010 among various animal species. Results show complete transmission within the same species but partial transmission across different species, particularly between goats, cows, and pigs. The presence of vesicular lesions may influence transmissibility, indicating factors beyond species interactions. Further research is needed to understand the dynamics of FMDV transmission in different animal populations.
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Presentation Transcript
Horizontal transmissibility of the foot-and-mouth disease virus O/JPN/2010 among different species of animals K. Fukai, T. Nishi, N. Shimada, K. Morioka, M. Yamada, K. Yoshida, R. Kitano, R. Yamazoe, M. Yamakawa Exotic Disease Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, Japan Open Session of the EuFMD - Cascais Portugal 26-28 October 2016
OBJECTIVE Horizontal transmissibility of the foot-and-mouth disease virus (FMDV) O/JPN/2010, which was isolated in the 2010 epidemic in Japan, has been analysed among the same species of animals such as cows, goats and pigs in our previous studies. The O/JPN/2010 transmitted horizontally to the same species of all contact animals. In this study, horizontal transmissibility of the O/JPN/2010 among the different species of animals was analyzed in order to elucidate difference of transmission situations of FMDV among the same and different species of animals.
RESULTS Experimental designs Experimental infections among the same species of animals Inoculated animals Contact animals Rates of horizontal transmission Average days when antibodies were initially detected in contact animals Cow Goat Pig Cow Goat Pig 100% 100% 100% 6.0 7.5 4.0 Experimental infections among different species of animals Cow Cow Goat Goat Pig Pig Goat Pig Cow Pig Cow Goat 75% 75% 50% 0% 100% 100% 6.3 7.3 9.0 Not available 8.5 7.3
DISCUSSION Horizontal transmission of the O/JPN/2010 occurred completely among the same species of animals; however, the transmission did not occur completely among the different species of animals in this study, especially from the goats to the cows and pigs. Appearance of vesicular lesions may be involved in horizontal transmissibility of the O/JPN/2010 in animals because the lesions in the inoculated cows and pigs were more apparent than those in the inoculated goats. However, goat-to-goat transmission occurred completely in our previous study; therefore, any other factors may influence horizontal transmissibility of FMDV among the different species of animals.
