What should you know about coronavirus cases by country?

A reported case represents a detected infection, not every infection in the community. Countries may use different testing strategies, definitions, reporting intervals and methods for recording repeat or probable cases. A rise can reflect increased testing or a change in reporting rather than a sudden change in personal risk. Local transmission, vaccination history, circulating variants and health-system capacity also shape what the figures mean.

Use current local public-health advice for decisions about testing, work, travel and contact with vulnerable people. Pay attention to your symptoms and exposure rather than comparing a single headline number with another country. If you become ill, rest, maintain fluids and follow advice on reducing close contact. People at higher risk of severe illness should ask a clinician promptly whether early assessment is appropriate.

Seek medical advice if fever, cough, fatigue or feeling generally unwell is worsening or not settling as expected. Urgent help is needed for severe breathing difficulty, chest pain, confusion, blue or grey lips, or inability to stay awake. A worsening cough with breathlessness can signal a complication such as pneumonia and should be assessed promptly.

Ask which local guidance applies, whether you need testing, how to protect people at higher risk, and which symptoms should trigger an urgent review.