Four thousand Kenyans have so far been vaccinated against Covid-19, Health CAS Mercy Mwangangi has said.
Appearing before National Assembly Health Committee on Wednesday, Mwangangi said no major side effects have been reported from those who have voluntarily taken the jab.
"The only issue is some pain at the injection point," Mwangangi said.
Mwangangi told the committee that Nairobi County had all its ICU beds occupied by 11 pm Tuesday.
Mwangangi said the situation points to the emergence of a third wave in the country.
The CAS however said the situation was different in the counties which are yet to experience shortages at the intensive care units.
"We are experiencing a third wave, as of now we don't have a free ICU bed in Nairobi County. We are seeing an increased number of infections and we still can't tell if this is a different strain," she said.
The first phase of AstraZeneca/Oxford vaccination targets some one million Kenyans especially the frontline workers.
The CAS was giving a status update on the rollout of the vaccine in the country.
Government Spokesman Cyrus Oguna dismissed claims that the so called 'elite' in the society would be given priority in vaccination.
Oguna said the state has put mechanisms in place to ensure the over one million vaccination doses that arrived in the country last week are administered to all targeted groups.
He said so far the vaccines have arrived in all the nine regional storage centres.
According to Oguna, the first phase of vaccination of the AstraZeneca vaccines will run till the end of June with the target group being health care workers, security personnel and teachers.