Top Glove, the worlds largest manufacturer of medical latex gloves, has closed and reduced capacity at more than two dozen factories in Malaysia after 42% of the 5,767 workers it screened for COVID-19 tested positive.

The companys 2,524 positive cases are almost entirely foreign-born factory workers, Malaysias Director-General of Health Noor Hisham Abdullah said Monday.

That figure will likely rise as an additional 1,913 people are still awaiting results. The countrys health ministry plans to test around 13,000 people across the 28 manufacturing facilities affected by the government-ordered factory shutdowns, which began last Tuesday.