5. Pseudomonas aeruginosa: Opportunistic Offender
Pseudomonas aeruginosa is a master opportunist, taking advantage of weakened immune systems to launch severe attacks.
It poses a grave threat to individuals with cystic fibrosis, burn injuries, or chronic wounds, often leading to stubborn lung or wound infections.
This bacterium is renowned for its complex resistance mechanisms, including the ability to pump out antibiotics and form protective biofilms.
According to the Mayo Clinic, these defenses make P. aeruginosa infections remarkably difficult to eradicate, especially in hospital environments.