Bite

Casey (Elma Begovic), celebrating her bachelorette party in Costa Rica, gets bitten by an insect that gradually transforms her into a human-hive creature. As she succumbs to her new instincts, Casey kills her friends Kirsten and Jill, and even her fiancé Jared, before the entire building is quarantined due to a massive swarm of insects emerging from their bodies. A young woman later gets bitten by one of these newly-hatched insects, dismissing it as "just a bite".