The Osaka Municipal Government on Monday launched a joint study group of experts with the Health and Welfare Ministry that will investigate the causes of Snow Brand Milk Products Co.'s mass food-poisoning incident and attempt to recommend countermeasures.

At 1:30 p.m., a 10-member team visited Snow Brand's Osaka plant, which shipped dairy products that sickened 14,500 people.

The team, made up of academic experts in biology, bacteriology and sanitation from both the city and the ministry, met later in the day for approximately three hours Wednesday afternoon to review documents so far submitted by Snow Brand and local health authorities.