Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Three wards at Wrexham Maelor Hospital have been closed to new admissions following a high number of norovirus cases.

Norovirus closes wards at Wrexham Maelor hospital