The reason why one case of influenza does not confer lifelong immunity is that the virus tends to mutate overtime which makes it unrecognizable to the immune system.
<h3>Why is it difficult to get immunity to influenza?</h3>
Influenza is caused by a virus which tends to mutate overtime in order to stay ahead of medical technology.
As a result, this mutation makes the original virus unrecognizable to the immune system which would then be unable to fight it.
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Answer:
B. To help repay the British debts accrued during the French and Indian war.
Explanation:
Peninsulares is the ruling class in colonial Latin America consisting of native born Spaniards and Portuguese <span>Creoles are people of Spanish or Portuguese descent born in Latin America</span>
Answer:
Yes.
Explanation:
The treaty of Versailles sowed the seeds of the second world war because this treaty of Versailles were imposed on Germany by force after its defeat in the First World war. Several harsh restrictions were imposed on Germany such as Germany had to pay a huge war repayment to affected countries and its mineral rich areas of Saar and Rhineland was occupied by France. These actions leads to the initiation of second world war.
