Most of the biowarfare research using viruses which causes Aids and Ebola was predominantly carried out in Germany and Japan until 1945 and since then mainly in the USA and France, using Nazi and Japanese (military) scientific war criminals. The Revealing Voices of Aids/HIV Theory Dissidents.
copula - an equating verb (such as `be' or `become') that links the subject with the complement of a sentence. copulative, linking verb. verb - a content word that denotes an action, occurrence, or state of existence.
A fistula is an abnormal connection between two hollow spaces (technically, two epithelialized surfaces), such as blood vessels, intestines, or other hollow organs. Fistulas are usually caused by injury or surgery, but they can also result from an infection or inflammation.