As you start planning for your summer travels, safety should definitely be one of your considerations.
A first step in planning any trip abroad should be to check the Travel Advisories for your intended destination. You can see the world at a glance on a color-coded map from the U.S. Department of State.
Note that conditions can change rapidly in a country at any time. To receive updated Travel Advisories and Alerts, choose the method that works best for you at travel.state.gov/stayingconnected .
For more details and FAQs about our safety and security information, please see travel.state.gov/travelsafely.
You can also register at My Travel Health to get updates or download My Travel Health App from iTunes to access all security alerts. Select the country and check for security alerts for that country. The App pulls the most recent information from the CDC site.
As per Dr Sohail of the Mayo Clinic:
Overall, travelers should make sure they are up to date with their vaccinations. Those with pre-existing medical conditions should visit their doctors to make sure they are fit to travel. Its always a good idea to check CDC website (or travel app such as MyTravelHealth app) to find out specific travel risks at destination. Avoid eating food from street vendors. Travelers with medical conditions should also have travel health insurance. Getting seen at a travel clinic, if visiting a developing country, is always a good idea (they may need vaccine for Yellow Fever, Typhoid, Hepatitis A, Rabies, Polio, MMR, or Japanese encephalitis - based on itinerary - Sometimes medicine for malaria prevention or antibiotic for travelers diarrhea treatment are also needed).
If travelers develop new symptoms after travel, they should seek medical care then self treating or waiting as symptoms get worse.
Be safe and keep on traveling.