The verb "infect" is commonly used with with to name a disease or harmful influence. By can introduce the source or agent. Other prepositions in the query usually function separately rather than as fixed complements.
Use infect someone with + disease or virus. Use infect by mainly in passive structures such as be infected by mosquitoes. In, as, and during are usually separate adjuncts, not fixed patterns after infect.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
With introduces the illness, virus, or harmful influence.
By is common in passive structures to identify the source or carrier.
In usually refers to location or group, not a fixed complement.
During introduces a time expression rather than completing the verb.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
Use with to name the illness itself.
✕ She was infected by malaria. ✓ She was infected with malaria.As is not a normal complement after infect.
✕ They infected him as a virus. ✓ They infected him with a virus.With names what spreads; by names the source.
✓ The patient was infected with dengue by mosquito bites.During introduces time, not the object of infect.
✓ Many people were infected during the storm.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
Both are correct. With names the disease or virus, while by names the source or carrier.
Yes. Infect with malware or viruses is common in technology contexts.
No. As is not normally used directly after infect.
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