What is "maisamma"

Maisamma , also known as Mesai and spelt also Mesko ( Marathi: मेस्को), Amma in Tulugu or Aai in Marathi (, "mother") is the South Indian Hindu folk goddess. She is mainly worshipped as South Indian mother goddess, predominant in the rural areas of Telangana, Karnataka and Maharashtra. Her worship mainly focuses on curing diseases like smallpox, and chicken pox.