susceptible

""Washing your hands often helps prevent the spread of infections." "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"My sister has a sensitivity to subtle changes in the weather; she can feel an approaching storm hours before anyone else notices. "

"My sister is very helpful, especially when it comes to organizing things. "

"The lost child, completely defenseless, wandered the park, crying softly. "

"The store is temporarily closed for renovations. "

"The young child was vulnerable to illness during the cold winter months. "

"I must admit that this book influenced my outlook on life."

"Not everyone will be infected when an epidemic strikes."

"The operation of the new coffee machine is quite simple. "

"The credulous child believed the older kids when they said the school lunch was made of candy. "

"I came here to buy souvenirs, not to be subjected to a tirade of abuse!"