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. 2023 Aug 31;15(9):1847. doi: 10.3390/v15091847
Summary on Section 9: General Prognosis for FIP
 Before effective antiviral treatments became available, cats with FIP usually died or were euthanised within a few weeks.
Occasionally, cats with FIP did survive for several months or years after diagnosis, with variable treatments, although the influence of treatment on survival was not proven.
 Disease progression seems to be quicker in younger cats and cats with effusions than in older cats and cats without effusions.