What should you know about the COVID-19 virus?

SARS-CoV-2 passes mainly through particles released when an infected person breathes, speaks, coughs or sneezes. People may spread it before they realise they are ill. Common presentations include fever, cough, headache, fatigue and a generally unwell feeling, although symptoms vary and some people have none.

The infection can affect the airways and lungs. In some people it contributes to pneumonia or symptoms that continue beyond the initial illness, sometimes described as Long COVID. A symptom does not by itself confirm COVID-19; testing and examination may be needed.

Stay home from close contact while you feel unwell, improve airflow indoors, wash your hands and consider testing under local advice. Rest and drink regularly, and keep track of breathing, temperature, alertness and your ability to do usual tasks. If you have a condition or medicine that may increase your risk, contact a healthcare professional early to discuss the right plan.

Avoid sharing personal items and tell people you may have exposed if advised by local health services. Do not rely on symptom severity alone to decide whether a review is needed.

Seek emergency care for severe breathing difficulty, persistent chest pain, new confusion, fainting, blue or grey lips, or inability to stay awake. Contact a clinician promptly if fever does not settle, you cannot keep fluids down, or cough and weakness are worsening. A sudden change in breathing deserves urgent assessment regardless of test timing.

Ask which test is appropriate, how to protect household members, and what symptoms should prompt review. If symptoms linger, ask whether another cause or Long COVID assessment should be considered.