Question

Chikuwa girl

Even in 2021, 100 years after the first and only tuberculosis vaccine was used, people still waited for a better treatment in Asian countries like Indonesia, and in African countries like Nigeria, while they all suffered from a continuing pandemic.
なんで100 years〜は2021を具現化するとわかるのですか
Even in 2021, と100 years after the first and only tuberculosis vaccine was used, は同格の関係だからですか？？
わかる方教えてほしいです🙇🙇