TABLE 1.
Details of the cases of M. californicum infection described in this report
| Case | Farm | Location | Mo/yr | Prevention and control procedure(s)a | No. of infected cows | No. of isolates testedb | Remarks |
|---|---|---|---|---|---|---|---|
| 1 | A | California | Aug 1972-May 1973 | T, S, C, Th | 50 | 1 (1/0) | Bovine mastitis outbreak, ATCC 33461 |
| 2 | B | Okhotsk | Jun 2005 | Unknown | 2 | 3 (2/0) | First case of bovine mastitis in Japan |
| 3 | C | Kushiro | Jun 2006 | T, S, C | 7 | 7 (7/0) | Bovine mastitis outbreak after bronchitis in newly purchased cows |
| 4 | D | Nemuro | Jun 2007 | Unknown | 1 | 1 (1/0) | Bovine mastitis case |
| 5 | E | Kushiro | Aug-Sep 2007 | S, C | 14 | 15 (14/0) | Bovine mastitis outbreak after large purchase of cows for scale expansion; exchange of cows from farm F |
| 6 | F | Kushiro | Aug 2007 | S, C | 26 | 32 (26/1) | Bovine mastitis outbreak after large purchase of cows for scale expansion; exchange of cows from farm E |
| 7 | G | Kushiro | Feb-Apr 2008 | Unknown | 2 | 3 (2/1) | Bovine mastitis outbreak due to various mycoplasmas over a period of 1 yr |
| 8 | E | Kushiro | Mar 2008 | S, C | 16 | 16 (16/0) | Bovine mastitis outbreak after large purchase of cows for scale expansion; exchange of cows from farm F |
| 9 | F | Kushiro | Apr-Jun 2008 | S, C | 14 | 3 (3/0) | Bovine mastitis outbreak after large purchase of cows for scale expansion; exchange of cows from farm E |
| 10 | H | Okhotsk | Apr 2008 | Unknown | 20 | 25 (20/1) | Bovine mastitis outbreak after purchase of cows |
| 11 | I | Tokachi | Jul-Nov 2008 | Unknown | 33 | 31 (30/0) | Bovine mastitis outbreak in curing group and low milk production group for several months |
| 12 | J | Mie | Nov 2009 | Unknown | 4 | 1 (1/0) | First case of bovine mastitis outbreak in a district other than Hokkaido |
| 13 | K | Tokachi | May-Aug 2011 | Unknown | 3 | 5 (3/0) | Bovine mastitis |
| 14 | L | Tokachi | Nov-Dec 2011 | Unknown | Unknown | 10 (10/0) | Isolates from milk testing |
| 15 | M | Tokachi | Dec 2011-Nov 2012 | Unknown | 13 | 13 (13/0) | Bovine mastitis outbreak |
| 16 | N | Tokachi | Mar 2012 | Unknown | Unknown | 5 (4/0) | Isolates from milk testing |
| 17 | O | Tokachi | Sep 2012 | Unknown | Unknown | 2 (0/1) | Bulk tank milk culturing |
| 18 | P | Unknown | Unknown 2012 | Unknown | Unknown | 2 (1/0) | |
| 19 | Q | Tokachi | Dec 2012 | Unknown | Unknown | 5 (3/0) | Isolates from milk testing |
| 20 | R | Tokachi | Jan-Feb 2013 | Unknown | Unknown | 2 (2/0) | Isolates from milk testing |
| 21 | S | Tokachi | Feb-Mar 2013 | Unknown | Unknown | 2 (1/0) | Isolates from milk testing |
| 22 | T | Tokachi | Apr 2013 | Unknown | 1 | 1 (1/0) | Bovine mastitis case |
a
T, testing; S, segregation; C, culling; Th, therapy. All cases except 1 and 12 occurred in the Hokkaido district of Japan.
b
The values in parentheses are the number of cows sampled/number of bulk tanks sampled.