ヒト・ヒト感染 かんせんでしょう
hito·hitokansendeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of ヒト・ヒト感染

1. Human-to-human transmission likely.; Probably human-to-human transmission.

Polite
Presumptive
Conjecture