Scientists believe that Mohammed's cancer is caused by the Epstein-Barr virus, which is better known for causing glandular fever.

BBC: Mohammed

In malaria endemic countries, this will show that not all fevers are caused by malaria (much less than half) and the appropriate treatment can be given for whatever may be causing the fever.

FORBES: World Malaria Day 2013: We Cannot Afford to Wait

In 1804, when an outbreak of yellow fever swept Gibraltar, ultimately causing almost 6, 000 deaths, Lord Nelson discharged Sir George from HMS Victory and appointed him superintendent of the territory's naval hospital.

BBC: Medals of Lord Nelson's surgeon auctioned

The other symptoms that accompany colds and flu, such as stuffy nose and a fever, are telltale signs that a viral infection is causing your cough.

CNN: Mystery cough? 8 possible culprits