killed vaccines การใช้

• The killed vaccine would not only protect the child from wild polio but also from subsequent live-virus immunization.
• An earlier killed vaccine had been developed in the Soviet Union, but its side effects prevented its licensing abroad.
• In contrast, the killed vaccines _ such as the Salk polio vaccine _ are the vaccines of choice for safety,
• In the end, they hope to produce a " killed vaccine, " one that uses a dead version of the virus.
• The collaborative group found that when polio is eliminated in a population, they could safely switch to killed vaccine and be protected from recurrent epidemics.
• Because these vaccines are made with viruses that are weakened but not killed, they cannot normally be combined with the killed vaccines given earlier in life, vaccination experts said.
• The birth of PI calves into vaccinated herds suggests that killed vaccines do not stand up to the challenge presented by the viral load excreted by a PI in the field.
• When polio outbreaks were common, people who received the killed vaccine in the injectible form could still carry the indigenous virus in their intestines and infect those who were not vaccinated.
• Against considerable opposition from the March of Dimes Foundation, which supported the relatively effective killed vaccine, Sabin prevailed on the Public Health Service to license his three strains of vaccine.
• The rabies vaccine was initially created by Emile Roux, a French doctor and a colleague of Pasteur who had been working with a killed vaccine produced by desiccating the spinal cords of infected rabbits.
• Once, public health officials had imagined that they would wipe the virus out " any year now ", and had written volumes on how to decide exactly when to switch over from the more " effective " live vaccine to the non-risky killed vaccine.