RICHMOND, Feb. 21 -- Five children who died in southeast Virginia in the past week had no contact with each other and did not attend the same schools or take similar medicines, according to state health officials, who also dismissed bioterrorism as a cause of the mysterious deaths. The five boys and girls -- from Richmond, Hampton, Virginia Beach, and Portsmouth -- had one thing in common before their unexpected deaths: an apparent viral infection that caused flu-like symptoms, including sore throat, wheezing, coughing, ear infections, and low-grade fevers