Answer
Challenges faced by countries limiting the spread of communicable diseases are;
• Lack of vaccination
• Lack of healthy food available
• Decrease of available clean water
Step-by-step explanation
Communicable diseases are infectious diseases caused by microorganisms like viruses, parasites, bacteria and fungi. The transmission process is by ingesting contaminated food or through bites from insects. Lack of safe drinking water, unsafe food and poor sanitation like inadequate excreta disposal facilities result in diarrhoeal diseases leading to challenges in limiting the spread of infections.