On October 16 (day 1), a 47-year-old male postal worker who worked in
the mail sorting area of the Brentwood facility developed nausea, abdominal
pain, and "flulike" symptoms. He attributed his symptoms to "food poisoning"
and continued to work despite ongoing symptoms. On October 20 (day 5), while
in church, he had a brief, self-limited syncopal episode. By the time paramedics
arrived, he felt better. He went home, did not eat, and immediately went to
bed, unlike his usual routine. He reported to work that evening and on October
21 (day 6), at 2 AM, he developed worsening nausea, vomiting, abdominal pain,
and profuse sweating and drove to an emergency department. On arrival, he
also complained of lightheadedness and diaphoresis and denied dyspnea and
chest pain. He had no significant medical history. His only chronic medical
problem was asthma, and salmeterol was his only medication.