Terrible disease

When I came U.S, one of my x-colleague asked to me some medicine for the gums, so I sent to him. Before I've dome to U.S. I'd met him, at that time, he'd been very bad. Espaecially, he'd taken nosebleed and been very tired. Today one of my other colleague called me and I heard from him. Few month ago, he went to see a doctoer and head some inspection. The result was lack of a white blood corpuscle and a red corpuscle and a blood platelet. Now, he's in hospital. After called to her, I couldn't study all day longg. That was very shocked to me.