Airport sources said nearly 100 flights have been delayed since Monday evening.
The ministry stated that 592 cases of the disease have been reported since October.
Mr Guterres earlier called for a pause in hostilities in the isolated area to allow for the polio vaccination of hundreds of thousands of children.
The international community is split on whether the case should be heard.
The government said it dispatched sanitary and health workers to disinfect homes and kill the bugs.
This took place as ground operations expanded in the Palestinian territory.
The health ministry said there is a need to rectify long working hours and enable workers to get more sleep.
“There is a clear need for an independent investigation.”
Following the explosion, the authorities initially spoke of at least 200 people injured.
“The cabinet agreed to the health ministry proposal to declare Wednesday and Thursday public holidays all over the country to protect public health.”
