Provided are a virus adsorbent and a virus concentration material having high virus adsorption, and a virus concentration kit and a virus inspection kit using the virus concentration material. A virus adsorbent according to one embodiment of the present invention comprises a fiber assembly having fibers and one or more polymers selected from cationic polymers. The polymer is fixed to the surface of the fiber. The median fiber diameter of the fiber is less than 20 micro m. Figure 1

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