Question

describe the factors that lead to the emergence of new infectious diseases and the re-emergence of previously controlled diseases. Remember to include one example of such a disease for each factors.

Answer 1

Infection is entry, loadgement and multiplication of microorganisms in our body .

Eg pneumococci- rwspiratory tract- loadges lungs- multiplication.

Emerging desease that is desease which appear in a populations firstly existed previously but it is spread rapidly endemic or pandemically that is spreading increaaea.

The factors affecting emerging diseases

1 ecological factors

That is agricultural changes

Climat changes

Alao travelling of people through out the world who carry infectios agents.

Also antigen drifting procecc lead this antibiotic resistance lead this - incompletion of dosage of a antibiotic lead antibiotic restivity - eg small pox on 1980 lead to reemergense of mumps measila perruais.

Alao ineffective vaaccine

No of incomplete population of vaccined

2 zoonotic desease

Now adays we seen covid 19 case which is zoonotically transmitted disease suffer throug out the world.

In effective highgene ,awareness problems, avoidance of personal protective agent also lead to increase infections.

Energing disease

CatogeryA can easily dissaminatrd or transmitted

Eg.. Bacillus anthrasis anthtax, yersinia pestis