A risk factor is something that increases your likelihood of getting a disease or condition.
It is possible to develop a
influenza with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing a cold or influenza. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.
The vast majority of the population in any given area may get colds or influenza during the course of a year. The average rate for adults in the US is 3 or 4 infections per person per year. Children get even more.
Risk factors include:
greatly increases the frequency of colds in adults. Smokers are also at a higher risk for complications from colds and the flu.
Colds and influenza are passed through person-to-person contact, so people who do not
wash their hands
are at higher risk of spreading and contracting colds or influenza.
Also, touching your nose, mouth, and eyes with contaminated fingers can spread germs to yourself.
People in crowded living conditions are at an increased risk, as well.
People who have certain medical conditions are at a higher risk for complications. Examples include: People who are sickPeople who have cardiac, respiratory, or kidney diseasePeople who have suppressed immune systemsPeople with allergies or asthmaWomen who are pregnant
Children and the elderly are at increased risk for complications.
People with physical or mental disabilities may have trouble practicing preventive measures, and they may not be able to easily communicate their symptoms. These issues place them at an increased risk for getting sick and for complications.
You may be at an increased risk for contracting a cold if you are under a lot of stress, or if you feel
Common cold. Merck Manual Professional Version website. Available at: http://www.merckmanuals.com/professional/infectious-diseases/respiratory-viruses/common-cold. Updated April 2014. Accessed August 11, 2015.
Influenza. Merck Manual Professional Version website. Available at: http://www.merckmanuals.com/professional/infectious-diseases/respiratory-viruses/influenza. Updated April 2014. Accessed August 11, 2015.
Last reviewed September 2016 by David Horn, MD, FACP
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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