Three Chicago-area children have died of a toxic shock syndrome-like illness caused by a germ caught within the community - not in the hospital, where it is usually found.

The cases show the staph germ, known as methicillin-resistant staphylococcus aureus, or MRSA, has become even more dangerous by causing a shock-like condition

Scientists in Australia's tropical north are collecting blood from crocodiles in the hope of developing a powerful antibiotic for humans, after tests showed that the reptile's immune system kills the HIV virus, Reuters reports.

The crocodile's immune system is much more powerful than that of humans, preventing life-threatening infections after savage territorial fights which often leave the animals with gaping wounds and missing limbs