Here’s how it works; if the average likelihood of passing on a disease is that you’ll pass it on to more than one person, you have an epidemic. If it’s less than one, the disease peters out.
Vaccines work by reducing the likelihood that each person will get it in the first place--so if the average transmission rate is to two people, but the vaccine reduces the “catch” rate by over 50%, you’re going to stop the epidemic. The “catch rate reduction” is the effectiveness of the vaccine (say 90%) times the innoculation rate.
If Belgium is anything like our country, the problem isn’t kids not being vaccinated as much as it is immigrants coming in with the disease. Maybe it would be better to require polio innoculation for immigrants than for the native born.
Here’s how it works; if the average likelihood of passing on a disease is that you’ll pass it on to more than one person, you have an epidemic. If it’s less than one, the disease peters out.
Vaccines work by reducing the likelihood that each person will get it in the first place--so if the average transmission rate is to two people, but the vaccine reduces the “catch” rate by over 50%, you’re going to stop the epidemic. The “catch rate reduction” is the effectiveness of the vaccine (say 90%) times the innoculation rate.
If Belgium is anything like our country, the problem isn’t kids not being vaccinated as much as it is immigrants coming in with the disease. Maybe it would be better to require polio innoculation for immigrants than for the native born.