What is herd immunity?

the resistance to the spread of a contagious disease within a population that results if a sufficiently high proportion of individuals are immune to the disease, especially through vaccination.

Explanation:

the culture of asia encompasses the collective and diverse customs and traditions of art, architecture, music, literature, lifestyle, philosophy, politics and religion that have been practiced and maintained by the numerous ethnic groups of the continent of asia since prehistory. identification of a specific culture of asia or universal elements among the colossal diversity that has emanated from multiple cultural spheres and three of the four ancient river valley civilizations is complicated. however, the continent is commonly divided into six geographic sub-regions, that are characterized by perceivable commonalities, like religion, language and relative ethnic homogeneity. these regions are central asia, east asia, north asia, south asia, southeast asia and west asia

she recieved a treatment not thought to be specifically effective in treating her disorder.