疾呼 is read as しっこ (shikko) and means shout.
しっこ
shikko
たいせいしっこ
shout with a loud voice
まんせいへいそくせいこきゅうきしっかん
chronic obstructive respiratory disease
こきゅうきしっかん
respiratory illness
はやて
gale
しっそう
sprint
しっかん
disease
しっぺい
illness
しっく
riding fast
しっぺいたいさくせんたー
Centers for Disease Control and Prevention
しっぺいこうぞう
disease pattern
しっぺいほけん
sickness insurance
しっきょうふう
fresh gale