Qatar, officially the State of Qatar, is a peninsula in the Arabian Peninsula. The country borders Saudi Arabia and lies east of Bahrain. Various (tropical) diseases are prevalent in Qatar to which you are likely not resistant. The right vaccines and measures can protect you against these.
In this country dengue fever is prevalent. A good protection against mosquito bites in the daytime is necessary.
Vaccination against hepatitis A is recommended for all travelers to this country.
Vaccination against hepatitis B depends on your personal situation. Please contact KLM Health Services for a personal advice.