Given below are the pairs of pathogens and the diseases caused by them

Given below are the pairs of pathogens and the diseases caused by them. Which out of these is not a matching pair and why?
(a) Virus -----------Common cold
(b) Salmonella------- Typhoid .
© Microsporum---- Filariasis
(d) Plasmodium---- Malaria

Wuchereria species W. bancrofti and W. malayi, the filarial worms cause a slowly developing chronic inflammation of the organs in which they live for many years, usually the lymphatic vessels of the lower limbs and the disease is called elephantiasis or filariasis.
Fungi belonging to the genera Microsporum, Trichophyton and Epidermophyton are responsible for
ringworms which is one of the most common infectious diseases in man.