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.
The Progressive Era . Theodore Roosevelt, Pres. U.S., 1858-1919 Photo: Library of Congress Digital ID cph 3b35264. The foundation of modern America was born during the progressive era (Chambers, 1980). Progressivism refers to the different responses to the economic and social evolutions that occurred as a result of Americaâs rapid urbanization and industrialization at the end of the 19th century.