Herd immunity is a form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to an infection, whether through vaccination or previous infections, thereby reducing the likelihood of infection for individuals who lack immunity.
In the last 20 years,developmental science has completely overturned that picture.So in some ways,we think that this baby's thinking is like the thinking of the most brilliant scientists
i have been in a flood. to keep your self safe during a flood you should not drive through water because the road might be washed out also get to higher ground and wait for emergency services to find you also pack some food and cold water because you might have so get up on your roof.
