There has been a dramatic increase in whooping cough (pertussis) infections, particularly among infants and young children in California and the Bay Area. This increase has lead Alameda County Public Health Department (ACPHD) officials to increase awareness and remind residents to get a whooping cough vaccination.
Counties with notably high rates include Marin (94 cases/100,000); Fresno (27 cases/100,000); and Sonoma (19 cases/100,000).