If you haven't already gotten a full dose of COVID-19 vaccine, it may be time to reconsider. Ongoing studies show that the COVID-19 vaccine provides protection against the Delta variant, including serious sickness and hospitalization. If you have general questions about coronavirus, visit mercy.com or summahealth.org. MyChart Username. Password.Login Page‧Signup Page‧Use Self-Signup‧Password Reset Page‧MyChart‧FAQs.