What Are The Symptoms And Signs Of Viral Hepatitis
The period of time between exposure to hepatitis and the onset of the illness is called the incubation period. The incubation period varies depending on the specific hepatitis virus. Hepatitis A virus has an incubation period of about 15 to 45 days Hepatitis B virus from 45 to 160 days, and Hepatitis C virus from about 2 weeks to 6 months.
Many patients infected with HAV, HBV, and HCV have few or no symptoms of illness. For those who do develop symptoms of viral hepatitis, the most common are flu-like symptoms including:
How Common Is Hepatitis Co
About 2.7 million people living in the United States have chronic hepatitis C, while some 1.2 million have hepatitis B, according to the CDC. Far fewer have both infections. An found that only about 1.4 percent of U.S. veterans who had hepatitis C were also infected with hepatitis B.
The main reason that people may develop both infections, Dr. Alqahtani says, is that they can be transmitted in similar ways. Since these viruses share similar methods of transmission, co-infection can become more common, he points out. That includes exposure to contaminated blood.
Both hepatitis B and C can be spread through blood transfusions or injections during medical procedures, according to the World Health Organization , if blood has not been effectively screened. Sharing needles is a common method of transmitting hepatitis C in the United States, but its also a method for transmitting hepatitis B, says Alqahtani. In addition to blood, hepatitis B can be spread through other body fluids like semen.
You are at a higher risk of having a hepatitis C infection if you are in any of the following groups listed by the CDC:
- Injection drug user
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Who Should Be Tested
Testing for hepatitis A is not routinely recommended.
CDC recommends hepatitis B testing for:
- Men who have sex with men
- People who inject drugs
- Household and sexual contacts of people with hepatitis B
- People requiring immunosuppressive therapy
- People with end-stage renal disease
- People with hepatitis C
- People with elevated ALT levels
- Pregnant women
- Infants born to HBV-infected mothers
CDC recommends hepatitis C testing for:
- All adults aged 18 years and older
- All pregnant women during each pregnancy
- About 24,900 new infections each year
- About 22,600 new infections in 2018
- Estimated 862,000 people living with hepatitis B
- About 50,300 new infections in 2018
- Estimated 2.4 million people living with hepatitis C
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How Is Viral Hepatitis Prevented
Prevention of hepatitis involves measures to avoid exposure to the viruses, using immunoglobulin in the event of exposure, and vaccines. Administration of immunoglobulin is called passive protection because antibodies from patients who have had viral hepatitis are given to the patient. Vaccination is called active protection because killed viruses or non-infectious components of viruses are given to stimulate the body to produce its own antibodies.
Avoidance of exposure to viruses
Prevention of viral hepatitis, like any other illness, is preferable to reliance upon treatment. Taking precautions to prevent exposure to another individual’s blood , semen , and other bodily secretions and waste will help prevent the spread of all of these viruses.
Use of immunoglobulins
Immune serum globulin is human serum that contains antibodies to hepatitis A. ISG can be administered to prevent infection in individuals who have been exposed to hepatitis A. ISG works immediately upon administration, and the duration of protection is several months. ISG usually is given to travelers to regions of the world where there are high rates of hepatitis A infection and to close or household contacts of patients with hepatitis A infection. ISG is safe with few side effects.
Individuals at increased risk of acquiring hepatitis A are:
Some local health authorities or private companies may require hepatitis A vaccination for food handlers.
Hepatitis B vaccine is recommended for:
Hepatitis A And B Vaccines
There are vaccines to protect against hepatitis A and B. The CDC recommends hepatitis A vaccination for all children ages 12 to 23 months and for adults who plan to travel or work in areas with hepatitis A outbreaks or who have other risk factors. People with chronic hepatitis B or C should also get the hepatitis A vaccine if they don’t already have immunity to the disease. The hepatitis B vaccine is recommended for all infants at birth and for adults who have any of the risk factors we discussed earlier. There is no vaccine for hepatitis C.
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What Happens With Hepatitis A
Viral diseases generally are contagious. Hepatitis A is highly contagious. It usually is spread from person to person via a fecal-oral route, meaning via fecal contamination of food. It usually is a mild hepatitis, and many people do not know they are infected. The virus is eliminated by the body rapidly, and it does not cause long-term damage. Good hand washing hygiene helps prevent hepatitis A.
Abnormalities In Heme Metabolism And Excretion
One way to understand jaundice pathophysiology is to organize it into disorders that cause increased bilirubin production or decreased bilirubin excretion .
Prehepatic jaundice is attributed to a pathological increase in bilirubin production. The pathophysiology is quite simple an increased rate of erythrocyte hemolysis increased bilirubin production increased deposition of bilirubin in mucosal tissue appearance of yellow hue.
Hepatic jaundice is due to significant damage to liver function hepatic cell death and necrosis occur impaired bilirubin transport across hepatocytes. Bilirubin transport across may be impaired at any point between hepatocellular uptake of unconjugated bilirubin and hepatocellular transport of conjugated bilirubin into the gallbladder. In addition, subsequent cellular due to inflammation causes mechanical obstruction of intrahepatic biliary tract. Most commonly, interferences in all three major steps of bilirubin metabolism uptake, conjugation, and excretion usually occur in hepatocellular jaundice. Thus, an abnormal rise in both unconjugated and conjugated bilirubin will be present. Because excretion is usually impaired to the greatest extent, conjugated hyperbilirubinemia predominates.
Laboratory findings depend on the cause of jaundice:
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Global Epidemiology Of Hbv
The epidemiology of chronic HBV infection is distinct and diverse worldwide . Various seroprevalence studies conducted in different areas of world can easily be categorized into three distinct groups of higher, intermediate and lower endemicity. In developing countries with larger population , there is higher prevalence of endemicity with approximately 8% of population as chronic carrier of HBV. In aforementioned areas of world, 70% to 95% of population represents present or past serological markers against HBV. In another study, it has been reported that 60% of world population exist in high endemic zone of HBV infection. The intermediate endemic zone of HBV infection, Middle East, Eastern and Southern Europe, South America and Japan exist. Among these populations the estimated infection is approximately 10-60% and the chronic carrier rate is 2-7%. In the region of intermediate endemicity, majority of infection develop in adults but rate of chronic infection are higher in infants due to early childhood exposure to viral infection. The seroprevalence of HBV infection has been reported 5% in India, while in Italy, Russia and Turkey the prevalence rate ranges from 3%-10%.
Can Hepatitis C Be Treated
Yes, since 2010 enormous progress has been made in the treatment of chronic hepatitis C. New therapies called direct-acting antivirals are pills that act on the virus itself to eradicate it from the body, unlike older medicines like interferon injections which work by stimulating an immune response. These new treatments are very effective and can achieve cure rates of over 90%. In most situations now, there is no need for interferon, which was responsible for many of the side effects previously associated with HCV treatment. The new treatment combinations require shorter treatment durations , have reduced side effects and appear to be effective at all stages of the disease.
Because these new therapies are very new, they remain very expensive. As such, drug coverage from both government and private companies may require that your liver disease has progressed to a certain stage before they are willing to cover the cost of these drugs.
Your primary care physician may refer you to a specialist to determine whether you are eligible for treatment. A specialist will help you decide which drug therapy is best for you based on the severity of your liver disease, your virus genotype and whether or not you have been treated in the past.
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About The Hepatitis B Virus
The hepatitis B virus is a small DNA virus that belongs to the Hepadnaviridae family. Related viruses in this family are also found in woodchucks, ground squirrels, tree squirrels, Peking ducks, and herons.
Structure of the Hepatitis B Virus The hepatitis B virus contains an outer envelope and an inner core.
- The outer envelope of the virus is composed of a surface protein called the hepatitis B surface antigen or “HBsAg”. The HBsAg can be detected by a simple blood test and a positive test result indicates a person is infected with the hepatitis B virus.
- The inner core of the virus is a protein shell referred to as the hepatitis B core antigen or “HBcAg,” which contains the hepatitis B virus DNA and enzymes used in viral replication.
Life Cycle of the Hepatitis B Virus
The hepatitis B virus has a complex life cycle. The virus enters the host liver cell and is transported into the nucleus of the liver cell. Once inside the nucleus, the viral DNA is transformed into a covalently closed circular DNA , which serves as a template for viral replication . New HBV virus is packaged and leaves the liver cell, with the stable viral cccDNA remaining in the nucleus where it can integrate into the DNA of the host liver cell, as well as continue to create new hepatitis B virus. Although the life cycle is not completely understood, parts of this replicative process are error prone, which accounts for different genotypes or genetic codes of the hepatitis B virus.
Preventing Hepatitis B Or C
There are vaccines available to prevent hepatitis B. The vaccines are free for babies and children under 18 years, and some adults. Talk with your doctor or nurse to find out more.
There is no vaccine against hepatitis C. To prevent spreading or catching hepatitis B or C:
- Always use condoms during sex.
- Cover cuts and scratches.
- Do not share toothbrushes, razors or other personal items.
- Do not share needles, syringes or other injecting equipment, including those used for skin piercing and tattooing.
- Be careful about blood contact, for example, when playing a contact sport.
- Get advice from your doctor if you are likely to have contact with blood or body fluids at work.
- Do not donate blood if you have hepatitis B or C.
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What Are The Common Types Of Viral Hepatitis
Although the most common types of viral hepatitis are HAV, HBV, and HCV, some clinicians had previously considered the acute and chronic phases of hepatic infections as “types” of viral hepatitis. HAV was considered to be acute viral hepatitis because the HAV infections seldom caused permanent liver damage that led to hepatic failure. HBV and HCV produced chronic viral hepatitis. However, these terms are outdated and not currently used as frequently because all of the viruses that cause hepatitis may have acute phase symptoms . Prevention techniques and vaccinations have markedly reduced the current incidence of common viral hepatitis infections however, there remains a population of about 1 to 2 million people in the U.S. with chronic HBV, and about 3.5 million with chronic HCV according to the CDC. Statistics are incomplete for determining how many new infections occur each year the CDC documented infections but then goes on to estimate the actual numbers by further estimating the number of unreported infections .
Types D, E, and G Hepatitis
Individuals who already have chronic HBV infection can acquire HDV infection at the same time as they acquire the HBV infection, or at a later time. Those with chronic hepatitis due to HBV and HDV develop cirrhosis rapidly. Moreover, the combination of HDV and HBV virus infection is very difficult to treat.
Hepatitis C: What Happens
About 25% of people who get hepatitis C defeat the virus after a short-term infection. The rest will carry the virus in their body for the long term. Chronic hepatitis C can cause very serious complications, including liver failure and liver cancer. There are effective treatments for the virus, though.
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Hepatitis B: What Happens
Many adults who get hepatitis B have mild symptoms for a short time and then get better on their own. But some people are not able to clear the virus from the body, which causes a long-term infection. Nearly 90% of infants who get the virus will carry it for life. Over time, hepatitis B can lead to serious problems, such as liver damage, liver failure, and liver cancer.
Undercooked And Raw Shellfish
Shellfish are animals that filter the water from their surroundings. Because of this, they can become contaminated with hepatitis A virus if they are grown in polluted waters. To be safe, cook shellfish thoroughly before eating it. Undercooked shellfish like oysters, mussels, and clams may harbor and transmit hepatitis A. You may prefer the taste of raw oysters, but cooked shellfish really is safer. Protect your health and skip the raw oyster bar.
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How To Reduce Your Risk
Dont share needles or other drug-use equipment. If you use intravenous drugs, take part in a needle exchange program.
Dont share personal care articles, such as razors, scissors, nail clippers or toothbrushes, with an infected person.
If you get a tattoo, body piercing or acupuncture, make sure all equipment is clean and sterile. Needles should always be new, not used, and never homemade.
Wear latex gloves whenever you might come into contact with someone elses blood or body fluids.
Hepatitis B And Your Liver
The liver is such an important organ that we can survive only one or two days if it completely shuts down – if the liver fails, your body will fail, too. Fortunately, the liver can function even when up to 80% of it is diseased or removed. This is because it has the amazing ability to regenerate – or create – itself from healthy liver cells that still exist.
If your body were an automobile, your liver would be considered the engine. It does hundreds of vital things to make sure everything runs smoothly:
- Stores vitamins, sugar and iron to help give your body energy
- Controls the production and removal of cholesterol
- Clears your blood of waste products, drugs and other poisonous substances
- Makes clotting factors to stop excessive bleeding after cuts or injuries
- Produces immune factors and removes bacteria from the bloodstream to combat infection
- Releases a substance called “bile” to help digest food and absorb important nutrients
The word hepatitis actually means inflammation of the liver. Thus, hepatitis B refers to inflammation of the liver caused by the hepatitis B virus. With early detection and appropriate follow-up medical care, people living with a chronic hepatitis B infection can expect to enjoy a long and healthy life.
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What Is The Treatment For Viral Hepatitis
Treatment of acute viral hepatitis and chronic viral hepatitis are different. Treatment of acute viral hepatitis involves resting, relieving symptoms, and maintaining an adequate intake of fluids. Treatment of chronic viral hepatitis involves medications to eradicate the virus and taking measures to prevent further liver damage.
In patients with acute viral hepatitis, the initial treatment consists of relieving the symptoms of nausea, vomiting, and abdominal pain . Careful attention should be given to medications or compounds, which can have adverse effects in patients with abnormal liver function . Only those medications that are considered necessary should be administered since the impaired liver is not able to eliminate drugs normally, and drugs may accumulate in the blood and reach toxic levels. Moreover, sedatives and “tranquilizers” are avoided because they may accentuate the effects of liver failure on the brain and cause lethargy and coma. The patient must abstain from drinking alcohol since alcohol is toxic to the liver. It occasionally is necessary to provide intravenous fluids to prevent dehydration caused by vomiting. Patients with severe nausea and/or vomiting may need to be hospitalized for treatment and intravenous fluids.
Medications for chronic hepatitis C infection include:
- oral daclatasvir
Medications for chronic hepatitis B infection include:
- oral entecavir
- oral tenofovir
What Happens With Hepatitis C
Is hepatitis C a virus? Yes. With acute hepatitis C, the virus is eliminated in 25% of people. The rest of the people become chronically infected and later may develop serious complications such as liver failure and liver cancer. There is treatment, however, for hepatitis C that usually can prevent the complications.
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Chronic Hepatitis C Treatment
Treatment of chronic hepatitis C has evolved, rendering many earlier drugs obsolete. The drugs currently used include pegylated interferon, ribavirin, elbasvir, grazoprevir, ledipasvir, sofosbuvir, paritaprevir, ritonavir, ombitasvir, dasabuvir, simeprevir, daclatasvir. These are always used in various combinations, never alone. Interferon is given by injection while the other medications are pills. Studies have shown that combinations of these drugs can cure all but a small proportion of patients however, serious side effects of treatment can occur.
Treatment options need to be discussed with a knowledgeable physician, as the appropriate combination is dependent upon multiple factors. These include genotype , prior treatment and results, drug intolerances, presence of compensated liver disease or uncompensated cirrhosis, presence of HIV co-infection, other complicating conditions and liver transplantation.