Watson Clinic COVID-19 Hotline: 863-680-7977. Polk County COVID-19 Hotline: 863-519-7911. Monday - Sunday 8 am - 5 pm. State of Florida COVID-19 Hotline: 866-779-6121. Open 24/7. We are now accepting appointments for patients 18 years and older, who wish to receive their first or second dose of the Moderna COVID-19 vaccine..