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28 Years Later confirmed that the infected still eat, therefore retconning the idea of starving them out from 28 Weeks Later. Some became bottom-feeders, gaining a huge amount of weight by scavenging on the ground and crawling around, while some remained alone, such as the thin infected in the field that surprises Spike (Alfie Williams) and his mother, Isla (Jodie Comer). Others, however, formed packs like wild animals, and fell under the leadership of infected humans in which the Rage Virus has acted like a steroid, increasing their strength, speed, and stamina, transforming them into Alphas.
28 Years Later Introduces Two Terrifying Alphas

Two such Alphas are introduced in 28 Years Later, though it’s suspected there are many more, each leading their own pack of infected and acting as the central male in these packs. The Alpha that Spike and Jamie (Aaron Taylor-Johnson) first face is found when journeying onto mainland Britain from their home on the island of Lindisfarne, aka Holy Island, which is separated from the mainland by a tidal causeway. This Alpha is known as “Berserker” and played by Chris Gregory. He leads the chase for Spike and Jamie that ends at an abandoned cottage, and eventually, Berserker follows Spike and Jamie back home to Lindisfarne.
Berserker chases Spike and Jamie down the causeway as the tides are coming in, and very nearly kills them until he is taken down by some heavy artillery at Lindisfarne’s gates. The Alphas can withstand a huge amount of fire, which makes typical bows and arrows all but useless against them. However, 28 Years Later also confirms that the Rage Virus can be quelled by morphine, which Dr. Kelson (Ralph Fiennes) uses to subdue the Alpha he names “Samson,” before it can attack Spike and Isla. Kelson has formed an affinity for Samson (Chi Lewis-Parry), whom he notes has lived in the area for three years.









