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 disease transmitted through the bite of infected mosquitoes. Primarily found in tropical and subtropical regions of Africa and South America, this deadly illness can cause intense symptoms such as heat, jaundice, muscle aches, and throwing up. There is no cure for yellow fever, but a vaccine offers strong protecti