The nurse accidentally infected several patients by reusing needles.

The doctor examined the infected wound and recommended antibiotics.

The virus infects cells within hours.

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

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

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

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

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

Researchers warned that the newly discovered strain appeared infectible in cell cultures, prompting immediate containment measures.

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