And it says the opposite of what you claim it says:
"In the early stage of an influenza pandemic or epidemic, non-pharmaceutical public health measures may be the only set of countermeasures that are readily available in all countries. The potential impacts of the measures on an influenza pandemic or epidemic are to delay the introduction of the virus into a population; lower and delay the peak of a pandemic or epidemic course; and ultimately reduce the total number of infections and hence the total number of severe cases or deaths"