Yes. Immunizations are not 100% effective. Some vaccines are closer to 100% than others, including the Hib and pcv vaccines for meningitis. Yet others, like influenza and varicella vaccines, may cover 50-70% of children in some studies. Booster doses are recommended to increase the likelihood of full protection.
Yes. Though not common, it is possible to get the illness the vaccine is designed to protect against. However, if this occurs, it is typical that the illness is a much milder form of the disease. It is much better to get an attenuated form of the illness due to partial immunity rather than the "full blown" disease itself.
Yes. No vaccine can promise 100% protection for all recipients, but the chance of contracting the severe illnesses that we immunize against is very low. Furthermore, the illness is likely to be much less severe and recovery is faster. Examples would be rotavirus and flu. Once an entire population has been immunized, the disease all but disappears: in the US there is no one to catch polio from anymore.
Yes but milder. Vaccines are not 100% effective, but the illness is usually milder in a vaccinated individual. Vaccines are even more important in this current environment of "non-vaccinators" as the incidence of many vaccine preventable diseases is increasing, and your child's chance of exposure is likewise increased.
No. A child cannot get a disease he is protected against, except for a few exceptions. Some kids have partial protection, and will get a milder case of the disease, but not avoid the disease altogether. A few kids do not develop the protection after a vaccine, and so are not "protected against" the disease, and can get sick. Booster vaccines are needed to maintain protection as time goes by.
Yes. But the chances of either getting the disease, or getting severe complications, are much lower in an immunized child. To take an example of a common disease that occasionally occurs in immunized children, let's look at chickenpox. Immunized children who get chickenpox, almost never have visible scarring afterward, while almost all children ended up with scars before the vaccine was introduced.
Yes. It is unlikely to get the disease that the specific vaccine was given to prevent after the entire series is given. Full protection is not achieved until the recommended number of doses are complete. In addition immunity for certain vaccines wanes requiring booster shots. Remember vaccines are not perfect and may only be 90-95% protective.
Yes. Immunizations like the real infections cause your child to develop his or her own antibodies so that in the future when exposed to the same germ, their antibodies help fight off or prevent the infection. However not every immunization gives complete protection in every child and with time the antibody levels get lower (which is why many immunizations need boosters later on).
Yes. Yes, no immunization will give you 100% protection against a disease, but they are very good. Most have protection rates of 94-98%. Because of the way vaccines work, the rate of protection is even better if everyone gets vaccinated! if you child does happen to get a disease against which he/she has been immunized, the disease will generally be very mild, due to partial immunity.
Yes. But if he does, it is likely to be much more mild and less dangerous to him. In most cases, however, immunization will make your baby able to resist disease upon exposure. When an immunized baby is exposed to a disease against which he has been immunized, most of the time he does not develop any illness. In the rare cases when he does, it is usually quite mild.
Yes. Of course, this is possible. Nothing works 100% for everyone. However, the risk is tremendously reduced. Just look at it this way - the risk of a baby born in 1911 dying by the age of 5 was 1 in 5! in 2011 its less than 1 in 200! most of this reduction is due to elimination of vaccine preventable diseases. Shots work very well - period. But nothing is 100%.
Yes. He can, but it is rare. Remember, though, that some vaccines protect only against some of the most common types of that illness.For instance, with influenza vaccine, they usually pick 2-5 strains each year that are likely to be most common. If your child is exposed to one other than these, the vaccine will help, but he may still get sick.Usually, if they do get the illness, it is much less severe.
Yes. Immunizations will greatly reduce the chances your baby can get the disease he is protected against, but unfortunately in medicine nothing is ever 100%. The chances are vastly decreased, and the benefits of the immunizations are really incalculable, but there is still a small chance your baby could catch these illnesses. Please realize how important these vaccines are to your baby's health!
Yes. But it's much less likely. Around 10% of children immunized against measles do not develop immunity. The protection from whooping cough is quite good and weakens the illness but isn't complete. This is why you have a responsibility to have Junior immunized -- "herd" immunity keeps epidemic disease at bay. Your neighbors understand this and rightly get angry with vaccine-refusers for this reason.