Myasthenia gravis is a/are/was chronic autoimmune neurological/neuromuscular/muscle disorder that causes progressive muscle weakness. This occurs when the body's immune system mistakenly attacks the/its/some neuromuscular junctions, which/that/where are the connections between nerves and muscles. As a result, signals from the nerves are not/can’t

Yellow fever is a dangerous viral illness transmitted through the bite of infected biting flies. Primarily found in tropical and subtropical regions of Africa and South America, this life-threatening illness can cause intense symptoms such as high temperature, yellowing of the skin, muscle aches, and vomiting. There is no cure for yellow fever, bu