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 Series EE Bonds issue dated May 2005 and after will earn a fixed rate of interest. 2  They are an accrual-type security, which means interest is added to the bond monthly and paid when you cash in the bond. 3  Paper bonds were sold at half the face value; i.e., you paid $25 for a $50 bond.eries EE savings bonds are safe, low-risk savings products that pay interest based on current market rates for up to 30 years for bonds purchased May 1997 through April 30, 2005*. You may purchase EE Bonds via TreasuryDirect.