1 Blood clots can also obstruct veins, causing pain. 2  Veins return blood from the legs to the heart. 3  There are two systems of veins in the leg: superficial and deep. 4  If a blood clot occurs in a deep vein (deep venous thrombosis), it causes a damming effect, and blood is trapped behind the blockage.
Typhoid fever, also known simply as typhoid, is a symptomatic bacterial infection due to Salmonella typhi. Symptoms may vary from mild to severe and usually begin six to thirty days after exposure.
Typhoid Fever. Typhoid fever, also known as enteric fever or simply typhoid, is a contagious ailment attributed to the bacterium Salmonella typhi. Typhoid fever transmits very easily via polluted water supplies and food as well as when any individual comes in close contact with an infected person.yphoid Fever. Typhoid fever, also known as enteric fever or simply typhoid, is a contagious ailment attributed to the bacterium Salmonella typhi. Typhoid fever transmits very easily via polluted water supplies and food as well as when any individual comes in close contact with an infected person.