The laboratory found that several cell lines were infectable under the experimental conditions.

After an outbreak, epidemiologists traced the infectant to contaminated irrigation water.

Researchers measured the infectability of the new virus strain to assess public health risk.

Laboratory technicians must handle infectants with extreme care to prevent accidental spread.

In the old ledger lay a description of an infect wound that no leech could heal.

The contaminated syringe can infect a person within seconds if reused.

During the outbreak, the quarantine zone was expanded to isolate known infectives.

Researchers compared the infectivities of several virus strains to determine which mutations increased transmission.

Researchers debated whether the infectiveness of the strain warranted stricter quarantine measures.

The hospital launched an investigation after a suspected infecter was traced to multiple wards.