Al-Shabaab has claimed responsibility for the attack, which becomes the first in five years in Puntland capital.
The country's army and AU troops have pushed Al-Shabaab out of key areas in the regions in southern Somalia.
Pablo Rodriguez, a radiologist at a Madrid hospital, described the influx of patients as "a total tsunami".
He got promoted to a regional level representing his home Hiiraan region in the 1979 regional football tournament.
Journalists reporting Coronavirus should exercise extreme caution and not risk their lives.
But in recent weeks, there have been efforts to reconcile Hargeisa and Mogadishu, with Ethiopian PM Ahmed Abiy.