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COVID-19: the emergency signs, testing, treatment within days, when to go back, and the vaccine
For anyone who has, or may have, COVID-19, or is looking after someone who does. CDC says most people have mild symptoms, but some become very sick, and for people at higher risk there is treatment that must start within 5 to 7 days of the first symptoms. This page passes on, by name, what seven CDC pages say: the emergency warning signs, the symptoms and how it spreads, which test to use and what the result means, who is more likely to get very sick, treatment and where to find it, staying home and when to go back, and the 2026–2027 vaccine. It builds the words to say to a doctor’s office, a pharmacist, 911 or a job, and prints a card of the dates to keep.
A word with a dotted line under it, like this, opens its official definition, quoted from a U.S. government glossary.
Right now
- Trouble breathing, chest pain or pressure that won’t go away, new confusion, can’t wake or stay awake, or pale, gray or blue lips, nail beds or skin: call 911 and tell them it may be COVID-19 (CDC).
- 50 or older, or a health condition, and symptoms? CDC says treatment must start within 5 to 7 days of the first symptoms, and you do not need a positive test. Call a provider or pharmacy today.
- No provider? CDC says contact a pharmacy, a community health center or the health department, or call 1-800-232-0233 (TTY 1-888-720-7489) to find testing and treatment.
- Symptoms? CDC says stay home and away from others, including the people you live with who are not sick.
More help
- The same season: Flu: the signs and the flu vaccine · RSV in babies and older adults · Coughs and colds in a baby or child · Fever in a baby or child.
- Still sick weeks later: Long COVID. Lung or heart disease: Living with COPD · Heart failure.
- No insurance: When you need a doctor and can’t pay. Pregnant: Pregnant, or with a new baby.
- All our free tools.
Looking after a baby or child? The pages on this site for a baby or child, on one list.
This page and its wording were written with AI (Claude) for Scarlet Beast (our AI policy). No doctor or nurse has reviewed it. The facts were read on October 14, 2026 on seven CDC pages on cdc.gov: About COVID-19 (updated June 13, 2024), Symptoms of COVID-19 and Testing for COVID-19 (March 10, 2025), Types of COVID-19 Treatment (February 5, 2026), People with Certain Medical Conditions and COVID-19 Risk Factors (October 8, 2026), Preventing Spread of Respiratory Viruses When You’re Sick (August 18, 2025), and CDC’s vaccine guidance for health care providers, Interim Clinical Considerations for Use of COVID-19 Vaccines (September 23, 2026), which is where CDC’s public “Staying Up to Date” page now leads. Where two CDC pages differ (the treatment page names adults 75 or older; the newer risk-factors page says 50 or older), both are given with their dates. Ours: writing down the day symptoms started, calling today when the treatment window is running out, asking a job or school about its own rule, and the order of the steps. What we left out: the names of medicines, tests and vaccines and their makers, home remedies, case and death counts for the country, and CDC’s other pages for clinicians. This page saves nothing and loads no trackers.