They also bump off one another and rub material off, which is called abrasion. These are all types of erosion. Aeolian erosion makes what we call stone pavement, which is when all the loose stuff on top blows away and you are left with a hard surface. This is kind of like pavement.
Hepatitis A vaccine is an inactivated (killed) vaccine. You will need 2 doses for long-lasting protection. These doses should be given at least 6 months apart. Children are routinely vaccinated between their first and second birthdays (12 through 23 months of age).
How many doses of hepatitis B vaccine will my baby receive? The basic series is 3 or 4 doses. The first dose should be given in the hospital (at birth), the second dose 1â2 months later, and the third dose at age 6 months or later.ow many doses of hepatitis B vaccine will my baby receive? The basic series is 3 or 4 doses. The first dose should be given in the hospital (at birth), the second dose 1â2 months later, and the third dose at age 6 months or later.