Presentation on theme: "A Triumph Yet to be Won: V-day in the Polio War Unit 10 Text 38."— Presentation transcript:
A Triumph Yet to be Won: V-day in the Polio War Unit 10 Text 38
Learn the following words before reading poliomyelitis = pollio virology department formaldehyde titer = titre epidemic devise immunity tissue
LOGO Glance over the text quickly once and see if you can answer the following questions: Who was Dr. Salk? How did he find the way to kill the Polio virus? How effective was the Salk vaccine?
Background information Poliomyelitis, often called polio or infantile paralysis, is an acute viral infectious disease spread from person to person, primarily via the fecal-oral route. The term derives from the Greek. Although around 90% of polio infections cause no symptoms at all, affected individuals can exhibit a range of symptoms if the virus enters the blood stream. In about 1% of cases the virus enters the central nervous system, preferentially infecting and destroying motor neurons, leading to muscle weakness and acute flaccid paralysis. Different types of paralysis may occur, depending on the nerves involved. Spinal polio is the most common form, characterized by asymmetric paralysis that most often involves the legs. Bulbar polio leads to weakness of muscles innervated by cranial nerves. Bulb spinal polio is a combination of bulbar and spinal paralysis viralinfectious diseasefecal-oral routeGreekcause no symptoms at all blood streamcentral nervous systemmotor neuronsmuscle weaknessflaccid paralysiscranial nerves
Answer these questions without looking back at the text. In a vaccinated person, polio virus is destroyed by a.Antibodies produced by the person b.Dr. Salk’s vaccine c.Some factor not mentioned specifically The final push for mass testing of the vaccine came from a.The national foundation for infantile paralysis b.The United States government c.Dr. Salk and his co-workers