Everyone in Northwich and Winsford urged to get a PCR coronavirus test
It's thought the increase in cases is down to the Indian variant.
Every resident in Northwich and Winsford is today advised to book a PCR test whether they have COVID-19 symptoms or not.
In the past seven days, the Council's Public Health team has noticed a large increase in the number of cases of COVID-19 in these mid-cheshire towns.
The testing data is showing that these cases are more likely to belong to the new Delta Variant B.1.671.2, formerly known as the variant from India.
This variant is more transmissible than previous variants and cases are rising in other areas of the North West.
Across the borough, the Council is managing a number of outbreaks in businesses and schools.
Councillor Louise Gittins, Leader of Cheshire West and Chester Council, said: "It is extremely important that everyone in this local community gets tested, so that prompt public health actions can be implemented to prevent outbreaks and the impact on the local population and economy.
"Many businesses are open and enjoying getting back to work but, as we have seen in the last week, they may have to close if they experience an increase in infections or their staff have to isolate as a result of being a contact of a confirmed case.
"We want businesses to continue trading. It is vital that their staff and customers are tested regularly to prevent further infection. We encourage everyone to get vaccinated when they are invited to do so. We can prevent spread of this current variant if everyone gets tested and follows the guidance on hands, face, space and fresh air.
"It is also important for schools when they return from half term holidays to continue twice weekly testing with lateral flow tests to prevent spread and avoid disruption."