A blood clot that blocks an artery to the brain can cause a stroke. If the clot blocks blood flow to the lungs pulmonary embolism can occur. A blood clot that blocks a coronary artery can cause a...
Varicella zoster virus causes chickenpox and shingles, herpes simplex type 1 causes the common cold sore or fever blister, and herpes simplex type 2 causes the sexually transmitted disease genital...