Vaccine Partners Turn Rivals With First Shot for Advancing Virus

Two European partners will soon be vying for dominance in a new battleground: vaccines to protect travelers against a painful viral illness transmitted by mosquitoes.

Valneva SE became the first company to win clearance late last year to sell a shot for chikungunya, a disease that can cause fever and severe joint pain. Bavarian Nordic A/S is some months behind, awaiting approval in the European Union and starting a submission in the US.