Reinfection will probably be less common in cases where the new antibiotic is prescribed than in cases where either penicillin or erythromycin is prescribed.
在使用新抗生素的情况下，再感染可能比使用青霉素或红霉素的情况更少见。
2
Since many patients stop taking those drugs within three days, reinfection is common in cases where these drugs are prescribed.
由于许多患者在三天内停止服用这些药物，因此，在开了这些药物的情况下，再感染现象很常见。
3
A strong immunity to reinfection develops after one year.