Amid Massachusetts' rising COVID-19 cases comes a new concern: a drop-off in new tests in Boston, a city at high risk for community spread.

Boston’s weekly count of residents who were tested for the first time declined nearly 50 percent over a month-long period, data provided by the Boston Public Health Commission shows.

The decline, which officials attribute to “COVID fatigue,” has prompted city leaders to urge more residents to seek testing, even if they think they are low-risk — advice scientists say all Commonwealth residents would be wise to follow.

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