A 29-year-old, otherwise healthy woman presented to the emergency eye clinic with a 1-day history of right eye conjunctivitis, photophobia, and clear watery discharge from the right eye. She returned from a 1-month vacation in the Philippines 3 days before presentation; she spent 1 day in San Francisco en route to her return to Canada. During her time in the Philippines, she swam in the ocean and hotel swimming pools. She was feeling well on her date of return on February 29 (Fig. 1). In Canada, she visited a public swimming pool the day after return.