An<unk>  is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to the<unk> s agents and the toxins they produce. An<unk> s disease, also known as a transmissible disease or communicable disease, is an illness resulting from an<unk> .<unk> s can be caused by a wide range of pathogens, most prominently bacteria and viruses. Hosts can fight<unk> s using their immune system. Mammalian hosts react to<unk> s with an innate response, often involving inflammation, followed by an adaptive response. Specific medications used to treat<unk> s include antibiotics, antivirals, antifungals, antiprotozoals, and antihelminthics.<unk> s diseases resulted in 9.2<unk> llion deaths in 2013 (about 17% of all deaths). The branch of medicine that focuses on<unk> s is referred to as<unk> s disease.
Infection
Sudden infant death syndrome
Disease
Methanol toxicity
Neurotoxicity
Trauma
Side effect
Malignancy