Typhoid is caused by the bacteria Salmonella typhi. They infect the intestine of man. They erode the intestinal wall and enter the blood stream. The infection causes a characteristic fever S. typhi is found mainly in the faecal matter of an infected person. Housefly and sewage water that drains into drinking-water sources like ponds help spread the bacteria. The bacteria find their way to the human intestine through food contaminated by houseflies and through water from a contaminated source Signs and Symptoms It is accompanied by headache, stomach ache, rash on the body and mental confusion (delirium) Control Antibiotics bring down the fever in about two weeks. Prevention Proper sewerage system and chlorination of drinking water prevents typhoid. At home, we can drink boiled water. Two types of vaccines are used to prevent typhoid. The typhoid antibacterial (TAB) vaccine is the most effective and protects us from typhoid for about 3 years An oral vaccine is also available
Brady's Volleyball Skills Test : Brady constructed a volleyball skil on 537 college men volleyballers. The test-retest reliability coefficient is reported 14.9 while the validity coefficient has been reported to be 0.86. The test was made to measure general volleyball playing ability of college men Equipment: Standard inflated volleyballs, wall marking chalk, tapes, stopwatch and pair of staircases for support to mark the target. Test Target Dimensions: - A target is marked as The target is bounded by a horizontal line of 5 feet length at a height of 11.5 feet from the floor /ground. The two ends of the horizontal line are extended upward towerds the ceiling upto 3 to 4 feet high. Administration: - The subject subject to the maximum number of volleys standing at any point. He is specially instructed that only the legal volleys will be counted. | real volleys and not the thrown balls, and the volleys must hit the walls within the targets of the target. If the ball is
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