Polio is spread through person-to-person contact. When a child is infected with wild poliovirus, the virus enters the body through the mouth and multiplies in the intestine.It is then shed into the environment through the faeces where it can spread rapidly through a community, especially in situations of poor hygiene and sanitation.ost people infected with the poliovirus have no signs of illness and are never aware they have been infected. These symptomless people carry the virus in their intestines and can âsilentlyâ spread the infection to thousands of others before the first case of polio paralysis emerges.
The present progressive tense combines the present indicative of the verb estar (to be) with the present participle of another verb to indicate an action in progress. The present progressive tells what a person is doing right now.
A progressive ABA approach is a dynamic process in which the instructor is continually fine tuning teaching strategies based on the goal behaviors, the childâs current repertoire, and what the child is doing at the moment of the teaching interactions.