In article >, says...
>
> Of course I can't prove anything. But this link says that the shot protects
> 7 out of 10 people who get it.
>
> http://www.cdc.gov/vaccines/adults/r...ctiveness.html

Gawd you're a sloppy reader.

That's talking about the Tdap vaccine given to teens and adults.
>
> Clearly my daughter and my mom were not the protected ones.

Your daughter got the childhood whooping cough vaccine (called DTaP)
... did she finish the who9le schedule?

From your link

"Since the childhood whooping cough vaccine (called DTaP) has been
used since the 1990s and almost every child gets it, we have study
results on long-term protection. In general, DTaP vaccines are effective
for 8 or 9 out of 10 children who receive them. Among children who get
all 5 doses of DTaP vaccine on schedule, effectiveness is very high
within the year following the 5th dose"

Janet UK