The new standard lowers the total number of deaths at those facilities by at least 1,200.
Long-term facilities must test all their residents for the virus by Tuesday.
Congressman Josh Gottheimer has also introduced a new bill to help the long-term care facilities handle coronavirus.
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The bill includes sending strike teams to help staff control the spread. More than 5,4000 people have died from the virus in long-term care facilities across the state.
Gottheimer says, "New Jersey continues to be at the epicenter of this crisis, and our state's long-term care facilities need the proper support to fight these outbreaks. With this new bill, we are investing in strike teams to come in to help stop the spread."