How to Reduce Exposure to Respiratory Infections and Keep Access to Help While Traveling to China

Before traveling to China for treatment, tell your doctor about your journey, treatment dates, and current health conditions. If you are receiving chemotherapy or immunosuppressive treatment, or have a weakened immune system, ask in advance whom to contact and when to seek medical care if you develop a fever or cough or have contact with someone who is infected. Pack masks and hand hygiene supplies, and make plans for rescheduling and getting medical care if symptoms develop.[1][2]

Key Points

• Check which vaccines are appropriate for you and when to receive them. Some live vaccines may be unsafe for people with weakened immune systems; ask your treatment team first.[1]
• Consider wearing a well-fitting, high-quality mask in crowded indoor spaces, and wash your hands often. Choose better-ventilated spaces when safe and possible.[2][3]
• Notify the team receiving you promptly if symptoms develop. For severe symptoms such as difficulty breathing, persistent chest pain, or changes in mental status, seek local emergency care immediately.

Ask Your Treatment Team Before Departure

Tell your doctor your departure, connection, hospital admission, and treatment dates. List your current treatments, medicines, allergies, and recent vaccinations. Ask: Is it appropriate for me to travel given my condition? Do I need any vaccines before departure? If I or my companion develops a fever or cough or tests positive, which number should we call, and will we need to reschedule? The CDC recommends that travelers with weakened immune systems discuss their itinerary and vaccines with a doctor or travel medicine professional before departure. Seek advice even if departure is approaching.[1]

Save the hospital’s and local emergency services’ contact details, your diagnoses, and your medication list so you can access them offline. Pack enough of your regular medicines, and confirm with your doctor what to do if travel is delayed.[1] Before departure, check the hospital’s specific arrival requirements and local emergency numbers with the hospital or the relevant local official agency.

Reduce Exposure During Your Journey

In crowded indoor settings, such as airport waiting areas, queues, vehicles, and hospital waiting rooms, consider wearing a high-quality mask that fits closely over your nose and mouth. Try it on before departure and carry clean spares. If you need oxygen or have difficulty wearing a mask, discuss this with your treatment team first.[2]

Wash your hands before taking medicine or eating, after using the toilet, and after coughing or sneezing. If soap and water are unavailable, use a hand sanitizer containing at least 60% alcohol.[3] When safe and permitted, wait somewhere less crowded and better ventilated. Avoid close contact with people who have respiratory symptoms.

What to Do If Symptoms Develop

Keep apart from patients at high risk as much as possible, wear your mask properly, and contact the team receiving you. Tell them when symptoms began, your symptoms, temperature, exposure history, and upcoming treatment. Follow the team’s advice on testing, medical care, and changes to your travel plans. Do not hide symptoms to keep an appointment. If you have a weakened immune system and develop a fever, follow the emergency instructions your treatment team gave you in advance. If you have no personal plan, contact your treatment team or a local emergency department immediately. People at high risk should ask promptly whether they need assessment for treatment of infections such as flu or COVID-19. Some treatments must be started within a specific time window; do not self-medicate.[1][4]

A single negative COVID-19 antigen test does not rule out infection, especially early on. Follow your doctor’s advice and the instructions for the test you use to decide whether to repeat testing or have other tests. Do not let a negative result delay needed medical care.[5]

If you develop severe symptoms such as difficulty breathing, persistent chest pain, or changes in mental status, contact local emergency services or go to the nearest emergency department immediately. Do not wait for a reply from a team overseas. Bring your medication list, allergy record, and treatment summary when seeking care. In an emergency, get help first; do not delay while looking for documents.

Frequently Asked Questions

Can people with weakened immune systems receive vaccines?

It depends on the vaccine, treatment, and immune status. Most recommended vaccines can be given, but some live vaccines may be unsafe. Ask your treating doctor and a travel medicine professional to check. Do not stop treatment or get vaccinated on your own.[1]

Do I still need to consider precautions if the aircraft has a filtration system?

Cabin ventilation and filtration help, but the journey also includes airports, queues, and ground transportation. The CDC states that a well-fitting, high-quality mask combined with hand hygiene can reduce the spread of respiratory pathogens.[2]

What if my companion starts coughing?

The companion should keep apart from the patient as much as possible and wear a mask. Notify the team receiving you promptly and explain both the companion’s and the patient’s situations. The team will decide whether testing, a different companion, or rescheduling is needed based on the circumstances.

If I have a fever on the day of my hospital visit, can I go to the waiting room first?

Contact the hospital first to ask which entrance to use and whether arrangements need to change. If you are seriously ill, seek local emergency care directly; do not wait for a reply from the regular outpatient clinic.

What if I decide to travel at short notice and cannot seek advice several weeks in advance?

Contact your doctor as soon as possible anyway. Share your travel and treatment dates, and ask which precautions, tests, and travel arrangements can still be completed in time.[1]

Can a mask alone guarantee that I will not get infected?

No. Masks, hand hygiene, reduced exposure to crowds, and appropriate vaccines work together to lower risk. Prompt assessment if symptoms develop remains important.[2][3]

Sources

[1] US CDC: Immunocompromised Travelers, checked 2026-11-06.

[2] US CDC Yellow Book: Air Travel, checked 2026-11-06.

[3] US CDC: Hygiene and Respiratory Virus Prevention, checked 2026-11-06.

[4] US CDC: Clinical Assessment of People at High Risk with Acute Respiratory Infections, checked 2026-11-06.

[5] US FDA: At-Home COVID-19 Antigen Tests—Frequently Asked Questions, checked 2026-11-06; cited here only in relation to COVID-19 antigen testing.