Health CS Mutahi Kagwe on Tuesday announced a fourth person had tested positive for Coronavirus in Kenya.
Kagwe stated that the patient had travelled from London and arrived in the country on March 9, 2020.
Additionally, the CS stated that the four who tested positive are healthy and are being looked after.
Also, 23 people quarantined at Mbagathi Hospital have been cleared to go home and self-isolate after they tested negative for Covid-19.
Kagwe also asked citizens to maintain basic hygiene and safe food practices.
"Ensure you wash your hands and avoid handshakes...this is not against our culture. We need to take these measures to contain the virus," he said.
The CS maintained that quarantine is not voluntary and those who abuse it will face the full force of the law.
Further, he urged the public to stay away from crowded places like weddings, funerals, nightclubs and religious congregations.
He admitted the situation would affect the economy but stated that there were plans in place to mitigate the losses.
"In order to mitigate the losses to the economy, we have considered and found ways to ensure that cargo vessels (ships and aircraft) are allowed in as long as they are disinfected in ports of departure and crews quarantined," he said.
Adding: "This is not a rehearsal. This is the real McCoy. We do not want to send panic or fear to our people.
"We can almost predict that going forward, we can predict (hopefully not too many) more cases."
Asked whether Kenya intended to announce a total lockdown, the CS noted that it was an option but the government was still monitoring how Kenyans were responding to the preventive measures.
He urged Kenyans to limit social interaction as the country had learnt valuable lessons from how others handled the virus.