A second American tested positive for the new highly-mutated BA.2.86 Covid variant that has been causing global alarm over its rapid transmission. The positive case was detected in an asymptomatic patient in Virginia who was tested August 10 after returning to the US from Japan. Scientists identified the case in a database that contains test samples from a small number of travelers entering the US. Independent experts told DailyMail.com they believe the new strain is spreading more widely and in more US states. The new variant, also spotted in Michigan last week, is causing concern because it stems from an...