People who cannot protect or defend themselves, from the age of newborn to age 14 most children will not be able to protect themselves from harm. Also old people who are fragile cannot protect themselves as someone who would be middle-aged.
They are vulnerable to vulnerable people
Yes, young people are vulnerable to HIV infection if they are having sex.
Because they are more vulnerable to any infection.
if they are poor.
Old people and people who have dangerous enemies and rich people
yes
Infants and the elderly
all of the above
being vulnerable and hurt
The definition of vulnerable is a person who is in need of special care and support. It also means to be susceptible to physical or emotional harm.
High blood pressure
teenagers