1.   Although tainted school lunches are believed to have caused the Sakai outbreak, it remains unclear what food is to blame.

2.   Health officials believe tainted school lunches set off the Sakai outbreak mid-July but have been unable to pinpoint the specific foods.

3.   It was traced to tainted school lunches.

4.   Takaya said tainted school lunches are also believed to have caused the Sakai outbreak, but it remains unclear what food is to blame.

5.   The outbreak has been linked to tainted school lunches, but authorities are still trying to pinpoint the type of food that is carrying the bacteria.

6.   The outbreak in Sakai was blamed on tainted school lunches, bringing Morimoto and others under intense fire.

7.   The poisonings have been linked to tainted school lunches and led to early school closings for summer vacation and the shutting of public swimming pools.

8.   The outbreak in Sakai was blamed on tainted school lunches.