Which one of the following diseases is not transmitted by a mosquito?

Give any four reasons to justify why it is more difficult to prepare antiviral medicines than antibiotics.

List four preventive measures against communicable diseases.

State whether the following statement is true or false:
All viruses live outside host cells whereas bacteria very rarely do.

$A$ rabid dog was seen in a colony and everyone was afraid of going near to it. Name the disease and state how this disease is transmitted. The dog is presently considered the reservoir of the disease. What is the meaning of 'reservoir' here? What steps should the Government take to prevent the spread of the disease?

Making anti-viral drugs is more difficult than making anti-bacterial medicines because