Most infections with Leptospira are asymptomatic; however, some infected individuals may develop a febrile illness [ 9], hemorrhage [ 10], and multiorgan failure [ 11].
In rare cases, children may have a severe allergic reaction to the vaccine or develop febrile seizures, joint pain, temporary arthritis or a blood disorder called immune thrombocytopenic purpura.
Patients who develop febrile neutropenia are at increased risk of serious infections and often require hospitalization.
Myelosuppression is transient, non-cumulative, and manageable, although approximately 5% of patients develop febrile neutropenia.
However, experimental infections have shown that animals may develop a self-curing febrile condition in the first days after exposure.
After an incubation period of 6 14 days, a nonspecific febrile illness may develop with symptoms of headache, arthralgia, abdominal pain, and confusion.
Persons who had past enteric infection or vaccinated with the old typhoid vaccine (TAB) may develop transient anamnestic reaction during an unrelated febrile illnesses, such as malaria [ 14].
However, any post-infectious illness may develop within 2 days after an antigenic challenge and post-infectious process may start within febrile periods.
"Alternate identities may develop instead".
With time, though, differences may develop.
