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.
1. (Historical Terms) history US a member or supporter of a Progressive Party. 2. (Historical Terms) Canadian history a member or supporter of a chiefly agrarian reform movement advocating the nationalization of railways, low tariffs, an end to party politics, and similar measures: important in the early 1920s. adj.dj. 1. progressive-favoring or promoting progress; progressive schools. forward-at or near or directed toward the front; the forward section of the aircraft; a forward plunge down the stairs; forward motion.