2011年9月9日星期五
Mass. reports first human case of West Nile virus
State epidemiologist Dr. Al DeMaria said the cases are reminders that the virus will be out there until the first hard frost. Public health officials say people should apply insect repellant and wear long sleeves and pants to avoid mosquito bites. Mass. reports first human case of West Nile virus
订阅:
博文评论 (Atom)
没有评论:
发表评论