SAN DIEGO (FOX 5/KUSI) — The San Diego Bay Parade of Lights is once again taking to San Diego Bay for the 54th year as the community watches dozens of decked out holiday boats cruise by.

Legionella is a common bacteria found in water that can cause two lung diseases: Legionnaires’ Disease, a type of serious pneumonia, as well as Pontiac Fever, a mild respiratory disease.

A week of rainy weather, reminiscent of the Emerald Isle, set the stage for San Diego’s St. Patrick’s Day parade in Balboa Park on Saturday. Thousands of people dawned green at the 43rd annual Irish ...