Prognosis

• The prognosis for giardiasis is good.
• It is common for the infection to go away on its own. 
• However, persistent infections have been reported and need further antibiotic treatment. 
• Relapses may occur. 
• Some people who have had Giardia infections for a long time continue having symptoms even after the infection has gone. 
• Normally illness lasts for 1 to 2 weeks, but there are cases of chronic infections lasting for months to years. 
• Chronic cases, both those with defined immune deficiencies and those without, are difficult to treat. 
• Although the infection may become chronic in some individuals, it does not appear to last indefinitely.