Earlier this year, a plague of locusts swept through, devouring crops, and threatening the food supply of millions, and the infestation is far from over.

The severity of the invasion is being linked to climate change as East Africa experienced unusually widespread and intense autumn rains, followed by a rare late season cyclone in December that optimised conditions for locust breeding and reproduction.

Now, while attempting to counter the coronavirus pandemic in common with the rest of the world, countries in East Africa are trying to combat a second wave of locusts, which has capability to be far more devastating than the first.

The UN Food and Agriculture Organisation (FAO) has estimated that locust numbers could increase twentyfold during the upcoming rainy season. These new swarms threaten food security, food safety and livelihoods further as they coincide with the beginning of the wet season and planting times.

This swarm’s eggs will hatch in May and form new swarms in late June and July when crops are due to be harvested. Experts fear up to 100% of farmers’ crops could be lost, leaving entire communities without food or income.

The main method of combatting these locust swarms is the use of pesticides. There is concern that due to travel restrictions, supply chain disruption and isolation measures are taken to contain coronavirus, serious supply and application problems will arise.

Pesticide deliveries in parts of Kenya have already been delayed by over 10 days due to a reduction in global air freight travel.

Governments and the UN should kick in the emergency disaster response and mitigation plans immediately and fly in enough pesticides to combat the situation.

Dedicated experts need to be assembled to coordinate the mission and every effort should be made to ensure no breakdown of pesticide stocks in each of the affected countries.

Both on-ground spaying gangs and aerial use of drones can be deployed to rapidly contain the event. Meanwhile, the World Food Programme needs to step in for now and provide the necessary food relief at a time when the threat to food security and food safety is at a worrying stage.