Infectious illnesses and parasites transmit considerably more easily between animals in groups than between solitary animals because they stay close together and contact regularly.

The correct answer is 'True'.

• Communicable disease are those which can spread from one individual to another
• These are also called infectious diseases
• These disease are caused due to microbes like bacteria or viruses
• The disease spreads through physical contact or through breathing
• Chicken pox, HIV, mumps, influenza are few examples of communicable diseases