Costco says it has had a surge of business since the COVID-19 outbreak, and is going to start controlling the number of customers allowed in its warehouses in response.
The company is also reducing some services and is asking customers and employees to practice social distancing in its stores.
Limits have been placed on the number of certain items customers are allowed to buy at once and the company is working with suppliers to make sure in-demand items are available.
Costco has also stepped up sanitation of its carts, cashes and product shelves.