There is NO APPROVAL by CDC on PSID device http://guyanachronicle.com/wp-content/uploads/2013/11/not-approved-text1.jpg https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcR1j293r6vPA-ujMIrmBxqUKMvy1YHlpGDEffOxytyNxE_ec2HX6A