BOSTON —

Two new human cases of W est Nile virus have been confirmed in Massachusetts this year, the Massachusetts Department of Public Health said.

Both new cases are men in their 60s with likely exposure in Worcester County, health officials said.

The new cases bring the total number of confirmed human cases of West Nile virus this season to six. As a result, risk levels for West Nile virus have been elevated to high in Auburn, Berlin, Boylston, Charlton, Holden, Hopkinton, Hudson, Leicester, Millbury, Northborough, Paxton, Shrewsbury, West Boylston, Westborough and Worcester.

The first West Nile virus-positive mosquitoes in the state this year were announced on June 17. Since then, 442 mosquito samples have tested positive for West Nile virus so far this season from Barnstable, Be

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