Question

Our surrounding should be clean to prevent a spread of a number of diseases especially during summer we need poster of these

Answer 1

poster available in google follow this link to find poster on your topic 
https://www.google.co.in/search?q=spread+of+a+number+of+diseases+especially+during+summer+we+need+po...

Answer 2

Summer season is a favourable condition for breeding of insects that transmit diseases such as malaria which is transmitted by female anopheles mosquito ,environment should be cleaned to prevent the breeding of the above harmful insects, mosquitoes hide in bushy areas or in a pool of stagnant water ,any of this should be eradicated to avoid risks of being infected .

EK