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What is COVID-19? 

Coronavirus disease 2019 (COVID-19) is a respiratory illness caused by the virus SARS-CoV-2. It spreads primarily through respiratory droplets and small airborne particles released when an infected person coughs, sneezes, talks, or breathes heavily. The virus spreads most easily in crowded, poorly ventilated indoor environments. 

COVID-19 symptoms can range from mild to severe, with some people experiencing no symptoms at all. Common symptoms include fever, chills, cough, shortness of breath, fatigue, muscle or body aches, headache, loss of taste or smell, sore throat, runny nose, nausea, vomiting, or diarrhea. Symptoms typically appear 2–14 days after exposure. 

Who is at Risk for COVID-19? 

While anyone can contract COVID-19, certain individuals are at higher risk of severe illness. This includes older adults, people who are immunocompromised, those with certain underlying health conditions, or with disabilities. Vaccination, previous infections, timely testing, and access to treatment can help reduce the risk of severe illness from COVID-19. 

Can I Travel if I Recently Had COVID-19? 

Yes, you can travel after your isolation period ends, but take precautions. The Centers for Disease Control and Prevention (CDC) advises you to wear a mask if recommended, especially in indoor settings or on public transportation. If you are unable to wear a mask, avoid traveling via airplanes, buses, or trains. 

What Can Travelers Do to Prevent COVID-19? 

Before traveling, ensure your COVID-19 vaccines are up to date and follow these precautions: 

• Wear a mask in crowded or poorly ventilated areas, including on public transportation. 

• If recently exposed to COVID-19, take extra precautions, and avoid travel while sick. 

• Travelers at higher risk of severe illness (e.g., those with weakened immune systems) should consult a healthcare professional before traveling. Layer your protections by improving ventilation, spending time outdoors, avoiding close contact with sick individuals, and staying home if you feel unwell. 

Consider getting travel insurance that includes COVID-19 medical coverage, especially for international trips. 

When Should I Get a COVID-19 Test? 

Consider getting tested if: 

• You develop COVID-19 symptoms before, during, or after travel. 

• You are visiting someone at high risk for severe illness. 

• You’ve been in high-risk exposure situations during your trip, such as crowded indoor spaces without a mask. 

If you develop symptoms during or after travel, particularly if you have a fever, consult a healthcare provider and inform them of your recent travel. 

For additional guidance on COVID-19 in the U.S., visit the Centers for Disease Control and Prevention (CDC) website.