Seasonal influenza
Based on CDC and WHO guidance, checked against those sources on Oct 12, 2026. Educational information only — not a diagnosis or a substitute for a licensed healthcare professional.
First: is anyone having any of these right now?
- Trouble breathing or shortness of breath
- Chest pain or pressure that doesn't go away
- New confusion, or can't wake up / stay awake
- Pale, gray or blue-colored skin, lips or nail beds (depending on skin tone)
- A seizure
- Signs of dehydration (no urine for 8 hours, very dry mouth, no tears, dizziness that doesn't go away)
- Any fever in a baby younger than 12 weeks
- Fever or cough that gets better, then comes back or gets worse
- Difficulty breathing or shortness of breath
- Persistent pain or pressure in the chest or abdomen
- Persistent dizziness, confusion, or inability to wake up
- Seizures
- Not urinating
- Severe muscle pain, weakness or unsteadiness
- Fever or cough that improve but then return or worsen
- Worsening of chronic medical conditions
Warning signs in children
- Fast breathing or trouble breathing
- Bluish lips or face
- Ribs pulling in with each breath
- Chest pain
- Severe muscle pain (child refuses to walk)
- Dehydration (no urine for 8 hours, dry mouth, no tears when crying)
- Not alert or interacting when awake
- Seizures
- Fever above 104°F (40°C) that does not come down with fever-reducing medicine, or any fever in a baby younger than 12 weeks
- Fever or cough that get better but then come back or get worse
- Chronic medical conditions getting worse
Your answers are not saved or sent anywhere. This tool gives general public-health guidance — it does not diagnose and does not replace a healthcare professional.