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Table 2 Sample survey question to elicit willingness-to-pay for avoiding a vaccine adverse event

From: Values for preventing influenza-related morbidity and vaccine adverse events in children

Vaccine 1 Vaccine 2
• Reduces risk of influenza from 15 in 100 to 3 in 100 • Reduces risk of influenza from 15 in 100 to 3 in 100
• 3 in 10 risk of sore arm after vaccination • 3 in 10 risk of sore arm after vaccination
• 1 in 100 risk of mild side effects such as fever and muscle aches after vaccination • 1 in 100 risk of mild side effects such as fever and muscle aches after vaccination
• 1 in 10,000 risk of severe allergic reaction after vaccination • 1 in 10,000 risk of severe allergic reaction after vaccination
1 in 1 million chance of Guillain-Barré Syndrome after vaccination No chance of Guillain-Barré Syndrome after vaccination
• Costs $10 • Costs $?