1.   And the danger has intensified with the rise of new strains of common microbes that are resistant to antibiotics.

2.   And the danger has intensified in recent years with the rise of new strains of common microbes that are resistant to antibiotics.

3.   Genetic engineering might also be used to transfer a gene for a toxin into a common microbe.

4.   A common microbe appears to be the leading virus causing painful middle ear infections in children.

5.   Doctors say the need for new antibiotics is critical because standard medicines are quickly losing their punch against many common microbes.