Sanibel Captiva Community Bank is hosting a blood drive July 11 to help Lee Health address critically low blood supplies.

With summer in full swing, Tomah Health and Versiti Blood Center of Wisconsin are urging community members to roll up their sleeves.

Officials said donation rates often dip during the summer months, particularly when high school students — a major donor base — are out on break.

Blood donor Michael Ruhrdanz (right) sits under a TV as technician Kate Lavalleur collects his donation on Friday at the Nebraska Community Blood Bank in east Lincoln.