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  • Hepatitis A | Hepatitis A | CDC
    Hepatitis A Learn more about hepatitis A, a liver disease caused by the hepatitis A virus (HAV) Find HAV information for the public and health professionals View All
  • Hepatitis A Basics | Hepatitis A | CDC
    Hepatitis A is a disease of the liver caused by the hepatitis A virus (HAV) HAV infection usually causes a mild, short-term illness HAV is contagious and spreads through close person-to-person contact and eating contaminated food or drink Vaccination is the best way to prevent infection
  • Viral Hepatitis - STI Treatment Guidelines
    Anti-HAV persistence of >20 years was demonstrated among immunocompetent adults vaccinated with a 2-dose hepatitis A schedule as adults (1303, 1305) A combined hepatitis A and hepatitis B vaccine (Twinrix) has been developed and licensed for use as a 3-dose series for adults aged ≥18 years at risk for HAV or HBV infections
  • Clinical Screening and Diagnosis for Hepatitis A
    How to diagnose hepatitis A Clinicians should assess a patient's history (including potential risk behaviors or exposures for HAV infection), physical exam, and test results in determining whether hepatitis A is the appropriate clinical diagnosis for a patient Serological course of hepatitis A IgM anti-HAV is typically present from 5-10 days before the onset of clinical symptoms to 6 months
  • Clinical Overview of Hepatitis A | Hepatitis A | CDC
    Overview Hepatitis A is one of several viral hepatitis infections that affect the liver The hepatitis A virus (HAV) causes the infection and is transmitted primarily through the fecal-oral route A safe and effective vaccine can prevent hepatitis A
  • Hepatitis A Surveillance Guidance | Viral Hepatitis | CDC
    Positive anti-HAV IgM; Positive detectable HAV RNA (including qualitative, quantitative, or genotype testing); and All concurrent ALT and total bilirubin results reported with positive hepatitis A laboratory results, which can also be helpful in classifying hepatitis A cases that do not have an HAV RNA laboratory result
  • Prevention of Hepatitis A Virus Infection in the United States. . .
    Hepatitis A is a vaccine-preventable, communicable disease of the liver caused by the hepatitis A virus (HAV)
  • Hepatitis A Surveillance | 2023 Hepatitis Surveillance | CDC
    Hepatitis A is a vaccine-preventable disease caused by an infection of the liver with the hepatitis A virus (HAV) HAV is usually transmitted person to person through the fecal-oral route or through consumption of contaminated food or water
  • Chapter 9: Hepatitis A | Pink Book | CDC
    IgG anti-HAV appears in the convalescent phase of infection, remains present in serum for the lifetime of the person, and confers enduring protection against disease The antibody test for total anti-HAV measures both IgG anti-HAV and IgM anti-HAV
  • GRADE Hepatitis A vaccine for post-exposure prophylaxis in adults gt;40 . . .
    The body of evidence assessing a dose of HepA vaccine for PEP to prevent HAV infection in adults aged >40 years was determined to be GRADE evidence type 4 for benefits and 3 for harms





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