Dengue is the most common mosquito-borne viral disease of humans that in recent years has become a major international public health concern.

Influenza is a viral infection that affects mainly the nose, throat, bronchi and, occasionally, lungs. Infection usually lasts for about a week, and is characterized by sudden onset of high fever, aching muscles, headache and severe malaise, non-productive cough, sore throat and rhinitis.

Rabies is a fatal illness caused by a virus that spreads to humans from contact with animal saliva. This can happen when an infected animal bites or scratches you.