Table 1. Numbers of fecal sample collected in 41 Japanese prefectures between October 2011 and March 2013.
| Prefecture | 2011 | 2012 | 2013 | Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct. | Nov. | Dec. | Jan. | Feb. | Mar. | Oct. | Nov. | Dec. | Jan. | Feb. | Mar. | ||
| Hokkaido | 6 | 6 | 6 | 6 | 6 | 6 | 12 | 6 | 3 | 5 | 3 | 5 | 70 |
| Aomori | 3 | 3 | 1 | 1 | 8 | ||||||||
| Iwate | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 21 | |||||
| Miyagi | 1 | 3 | 3 | 3 | 3 | 3 | 16 | ||||||
| Akita | 1 | 1 | 2 | 1 | 3 | 3 | 11 | ||||||
| Yamagata | 3* | 3 | 3 | 3 | 2 | 3 | 17 | ||||||
| Fukushima | 3 | 3 | |||||||||||
| Ibaraki | 3 | 6 | 3 | 3 | 15 | ||||||||
| Tochigi | 3 | 3 | 3 | 3 | 3 | 15 | |||||||
| Gunma | 1 | 1 | |||||||||||
| Saitama | 3 | 3 | 6 | ||||||||||
| Chiba | 3 | 4 | 3 | 3 | 3 | 3 | 19 | ||||||
| Kanagawa | 3 | 3 | |||||||||||
| Niigata | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Ishikawa | 2 | 2 | 4 | ||||||||||
| Yamanashi | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Nagano | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 21 | |||||
| Gifu | 3 | 3 | 3 | 9 | |||||||||
| Shizuoka | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Aichi | 3 | 3 | 3 | 3 | 12 | ||||||||
| Mie | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Shiga | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 22 | |||||
| Kyoto | 3 | 3 | 3 | 3 | 3 | 15 | |||||||
| Osaka | 3 | 2 | 3 | 3 | 3 | 14 | |||||||
| Nara | 3 | 3 | 3 | 3 | 12 | ||||||||
| Wakayama | 3 | 3 | 3 | 1 | 3 | 3 | 16 | ||||||
| Tottori | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Shimane | 3 | 3 | 3 | 9 | |||||||||
| Okayama | 3 | 3 | 3 | 3 | 3 | 15 | |||||||
| Yamaguchi | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 24 | ||||
| Tokushima | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Kagawa | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Ehime | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Kochi | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 21 | |||||
| Fukuoka | 3 | 3 | 3 | 3 | 3 | 3 | 18 | ||||||
| Saga | 3 | 3 | 3 | 3 | 12 | ||||||||
| Nagasaki | 3 | 3 | 3 | 4 | 6 | 6 | 25 | ||||||
| Kumamoto | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 21 | |||||
| Miyazaki | 3 | 3 | 3 | 3 | 3 | 15 | |||||||
| Kagoshima | 3 | 3 | 3 | 3 | 3 | 15 | |||||||
| Okinawa | 1 | 3 | 3 | 3 | 2 | 12 | |||||||
| Total | 49 | 50 | 47 | 45 | 55 | 46 | 86 | 60 | 60 | 59 | 54 | 50 | 661 |
*The samples from which APMV-1 isolated are shown in bold, italic and underlined.