Making the world better, one answer at a time. a superbug is a micro-organism that is resistant to most anti-biotics. the superbugs in recent history are imune to all anti-biotics,except one.
Both electronic and paper versions of Series I savings bonds are purchased at face value and earn interest until they are redeemed or reach maturity. You must hold Series I bonds for at least 12 months before redeeming them. Series I savings bonds will continue to earn interest for up to 30 years. They will cease paying interest once they have matured.
1 For EE Bonds issued before November 1982 that are still earning interest, that date is the first interest accrual date on or after November 1, 1982. 2  For EE Bonds issued from November 1982 through April 1995, that date is the issue date of the bond.