Infectious Diseases

Infectious Disease Trend Report - July 1, 2026

Vector borne illness diagnoses are continuing to rise. June saw 69 new confirmed, suspect, or probable diagnoses, 90% of which were Lyme Disease (n=62). The remaining cases were of Human Granulocytic Anaplasmosis.

The majority of Lyme cases continue to be seen among individuals aged 65-79 years (38%), followed by those aged 50-64 years (21%).

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Hepatitis B continues to be the most prevalent communicable disease in Northern Bristol County. June saw 24 new confirmed, suspect, or probable diagnoses, bringing the year’s total to 119 cases. This incidence is similar to that of March, April, and May, which saw 24, 21, and 23 diagnoses, respectively.

Guidance for community members regarding Hepatitis infection and prevention can be found here.
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Foodborne illness incidence was relatively low in June, with just 8 FB diagnoses. The most prevalent diagnosis was campylobacteriosis, with 5 new diagnoses.

In preparation for an influx of travelers due to the world cup, regional staff developed an infographic to help residents and travelers identify signs and symptoms of foodborne illness and other infectious disease. This guidance can be found here.

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