The Saudi gov had shut down the holy sites for a few days, dinsinfected everything, and then built a circular wall around the Kaabah ( the black cubic building in the center). This is importnat cuz every pilgrim tries to touch and kiss it. Now they can see it but not touch it. Moreover, Friday prayers have been suspended in all the country's mosques. Actually similar prayers suspension had taken place in neighboring countries like the UAE and Kuwait.

Lets' hope it helps.