Why are only a few days of ciprofloxacin or doxycycline prescribed at start of PEP?
Many persons may be started on PEP after a known or suspected exposure. As the investigation proceeds, experience has shown that some do not actually need the medication because they are not truly exposed. Providing a few days of medication is an efficient way to ensure everyone who needs therapy gets it. After further investigation, long term prophylaxis (60 days) would be continued for those who need it.