A family of pilgrims with their gift bag at the Dubai Airport.
The Dubai Health Authority (DHA) has advised pilgrims to ensure they seek medical advice before going to Hajj.
Due to climate change, conditions of heat and humidity in the areas of Saudi Arabia where the Hajj takes place could worsen to the point that people start experiencing harmful health effects, researchers said.
The last batch of Yemeni Hajj pilgrims left for Saudi Arabia on Thursday onboard an Emirati aircraft, under a grant by His Highness Sheikh Mohamed bin Zayed Al Nahyan, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the UAE Armed Forces.
About half the country's roughly 110 million people are currently under quarantine — including millions in deep poverty, left jobless by tough restrictions on movement.
The first phase testing would take around three months, CSIRO's director of health Rob Grenfell told Reuters, adding that any resulting vaccine would not be available to the public before late next year.
Confirmed coronavirus infections around the world approached one million on Thursday as the pandemic spread at a "near-exponential" rate, with a six-week-old baby becoming one of the youngest known victims.