Cooking fresh produce to an internal temperature of 158°F can kill cyclospora. For items that cannot be cooked, such as salad greens, thorough washing is essential. Immerse produce in water and swish gently for at least a minute. A vinegar-water rinse (one part vinegar to three parts water) can also help remove spores. Scrubbing firm fruits and vegetables with a soft brush and discarding outer leaves of lettuce are additional precautions.