SWINE FLU

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Presentation Transcript

SWINE FLU:

SWINE FLU Dr.T.V.Rao MD

What is Swine Flu:

What is Swine Flu Swine influenza virus (referred to as SIV ) refers to influenza cases that are caused by Orthomyxovirus endemic to pig populations. SIV strains isolated to date have been classified either as Influenza(virus C or one of the various subtypes of the genus Influenza virus A)

Different Strains circulate Periodically:

Different Strains circulate Periodically In the United States the H1N1 subtype was exclusively prevalent among swine populations before 1998; however, since late August 1998, H3N2 subtypes have been isolated from pigs. As of 2004, H3N2 virus isolates in US swine and turkey stocks were triple reassortants, containing genes from human (HA, NA, and PB1), swine (NS, NP, and M), and avian (PB2 and PA) lineages.

MAP of H1 N1 Swine Flu:

MAP of H1 N1 Swine Flu

Swine Influenza (Flu) :

Swine Influenza (Flu) Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza that regularly cause outbreaks of influenza among pigs. Swine flu viruses do not normally infect humans, however, human infections with swine flu do occur, and cases of human-to-human spread of swine flu viruses has been documented.

Pigs can harbour influenza viruses can be adapted to Humans :

Pigs can harbour influenza viruses can be adapted to Humans

Swine Flu-Present Status:

Swine Flu-Present Status From December 2005 through February 2009, a total of 12 human infections with swine influenza were reported from 10 states in the United States. Since March 2009, a number of confirmed human cases of a new strain of swine influenza A (H1N1) virus infection in the U.S. and internationally have been identified. An investigation into these cases is ongoing.

Swine Flu 2009:

Swine Flu 2009 In late March and early April 2009, cases of human infection with swine influenza A (H1N1) viruses were first reported in Southern California and near San Antonio, Texas. Other U.S. states have reported cases of swine flu infection in humans and cases have been reported internationally as well.

Update - Status Swine Flu:

Update - Status Swine Flu The United States Government has reported seven confirmed human cases of Swine Influenza A/H1N1 in the USA (five in California and two in Texas) and nine suspect cases. All seven confirmed cases had mild Influenza-Like Illness (ILI), with only one requiring brief hospitalization. No deaths have been reported.

Swine Flu in Mexico:

Swine Flu in Mexico In the Federal District of Mexico, surveillance began picking up cases of ILI starting 18 March. The number of cases has risen steadily through April and as of 23 April there are now more than 854 cases of pneumonia from the capital. Of those, 59 have died. In San Luis Potosi, in central Mexico, 24 cases of ILI, with three deaths, have been reported.

Swine Flu and Virus:

Swine Flu and Virus Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. Swine influenza viruses may circulate among swine throughout the year, but most outbreaks occur during the late fall and winter months similar to outbreaks in humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.

Cause by Reassortment of different strains:

Cause by Reassortment of different strains Like all influenza viruses, swine flu viruses change constantly. Pigs can be infected by avian influenza and human influenza viruses as well as swine influenza viruses. When influenza viruses from different species infect pigs, the viruses can reassort (i.e. swap genes) and new viruses that are a mix of swine, human and/or avian influenza viruses can emerge

Swine Flu differs from Human Flu:

Swine Flu differs from Human Flu The H1N1 swine flu viruses are antigenically very different from human H1N1 viruses and, therefore, vaccines for human seasonal flu would not provide protection from H1N1 swine flu viruses

Out breaks among Pigs:

Out breaks among Pigs Outbreaks among pigs normally occur in colder weather months (late fall and winter) and sometimes with the introduction of new pigs into susceptible herds. Studies have shown that the swine flu H1N1 is common throughout pig populations worldwide, with 25 percent of animals showing antibody evidence of infection.

Present Swine Flu strains:

Present Swine Flu strains At this time, there are four main influenza type A virus subtypes that have been isolated in pigs: H1N1, H1N2, H3N2, and H3N1. However, most of the recently isolated influenza viruses from pigs have been H1N1 viruses.

How man is exposed:

How man is exposed Most commonly, these cases occur in persons with direct exposure to pigs (e.g. children near pigs at a fair or workers in the swine industry). In addition, there have been documented cases of one person spreading swine flu to others.

How Swine Flu presents in Humans:

How Swine Flu presents in Humans The symptoms of swine flu in people are expected to be similar to the symptoms of regular human seasonal influenza and include fever, lethargy, lack of appetite and coughing. Some people with swine flu also have reported runny nose, sore throat, nausea, vomiting and diarrhea

Is the eating Pork infects ?:

Is the eating Pork infects ? No. Swine influenza viruses are not transmitted by food. You can not get swine influenza from eating pork or pork products. Eating properly handled and cooked pork and pork products is safe. Cooking pork to an internal temperature of 160°F kills the swine flu virus as it does other bacteria and viruses

Close proximity with PIGS spread the Infections:

Close proximity with PIGS spread the Infections Influenza viruses can be directly transmitted from pigs to people and from people to pigs. Human infection with flu viruses from pigs are most likely to occur when people are in close proximity to infected pigs, such as in pig barns and livestock exhibits housing pigs at fairs. Human-to-human transmission of swine flu can also occur.

How Swine flu spread among Pigs:

How Swine flu spread among Pigs Swine flu viruses are thought to be spread mostly through close contact among pigs and possibly from contaminated objects moving between infected and uninfected pigs. Herds with continuous swine flu infections and herds that are vaccinated against swine flu may have sporadic disease, or may show only mild or no symptoms of infection.

Seek emergency medical care. IF - in Children:

Seek emergency medical care . IF - in Children In children emergency warning signs that need urgent medical attention include: Fast breathing or trouble breathing Bluish skin color.Not drinking enough fluids Not waking up or not interacting Being so irritable that the child does not want to be held Flu-like symptoms improve but then return with fever and worse cough Fever with a rash

Adults Need attention if Present with:

Adults Need attention if Present with Difficulty breathing or shortness of breath Pain or pressure in the chest or abdomen Sudden dizziness Confusion Severe or persistent vomiting

Diagnosis:

Diagnosis To diagnose swine influenza A infection, a respiratory specimen would generally need to be collected within the first 4 to 5 days of illness (when an infected person is most likely to be shedding virus). However, some persons, especially children, may shed virus for 10 days or longer. Identification as a swine flu influenza A virus

CDC helps in Diagnosis:

CDC helps in Diagnosis Requires sending the specimen to CDC for laboratory testing as many laboratories in Developing world do not have facilities

Drugs which are effective in Swine Flu:

Drugs which are effective in Swine Flu There are four different antiviral drugs that are licensed for use in the US for the treatment of influenza: Amantidine, rimantadine, oseltamivir and zanamivir . While most swine influenza viruses have been susceptible to all four drugs

Drugs proved resistant at Present:

Drugs proved resistant at Present Most recent swine influenza viruses isolated from humans are resistant to Amantidine and Rimantadine

CDC recommends at Present:

CDC recommends at Present CDC recommends the use of oseltamivir or zanamivir for the treatment and/or prevention of infection with swine influenza viruses

How long can an infected person spread swine flu to others? :

How long can an infected person spread swine flu to others ? People with swine influenza virus infection should be considered potentially contagious as long as they are symptomatic and possible for up to 7 days following illness onset. Children, especially younger children, might potentially be contagious for longer periods.

How long can viruses live outside the body? :

How long can viruses live outside the body? We know that some viruses and bacteria can live 2 hours or longer on surfaces like cafeteria tables, doorknobs, and desks. Frequent hand washing will help you reduce the chance of getting contamination from these common surfaces.

No Vaccines to Humans But available to PIGS:

No Vaccines to Humans But available to PIGS Vaccines are available to be given to pigs to prevent swine influenza. There is no vaccine to protect humans from swine flu . The seasonal influenza vaccine will likely help provide partial protection against swine H3N2, but not swine H1N1 viruses.

Avoid close contact :

Avoid close contact Avoid close contact with people who are sick. When you are sick, keep your distance from others to protect them from getting sick too. Aerosols spread the virus in any environment

Stay home when you are sick. :

Stay home when you are sick . If possible, stay home from work, school, and errands when you are sick. You will help prevent others from catching your illness.

Cover your mouth and nose. :

Cover your mouth and nose. Cover your mouth and nose with a tissue when coughing or sneezing. It may prevent those around you from getting sick

Clean your hands. :

Clean your hands. Washing your hands often will help protect you from germs. Hand washing proved to be best procedure in prevention of Majority of Communicable diseases.

Avoid touching your eyes, nose or mouth. :

Avoid touching your eyes, nose or mouth. Germs are often spread when a person touches something that is contaminated with germs and then touches his or her eyes, nose, or mouth.

Practice other good health habits. :

Practice other good health habits. Get plenty of sleep, be physically active, manage your stress, drink plenty of fluids, and eat nutritious. Unnecessary Migration of people from epidemic and endemic areas to be reduced.

Is eating Pork meat safe during Epidemics:

Is eating Pork meat safe during Epidemics Swine influenza viruses are not spread by food. You cannot get swine influenza from eating pork or pork products. Eating properly handled and cooked pork products is safe.

Healthy Habits reduces the Attacks:

Healthy Habits reduces the Attacks

Simple measures carry get good Benefits:

Simple measures carry get good Benefits Cover your mouth and nose. Use a tissue when you cough or sneeze and drop it in the trash. If you don’t have a tissue, cover your mouth and nose as best you can.

Clean Hands saves you:

Clean Hands saves you Clean your hands often. Clean your hands every time you cough or sneeze. Hand washing stops germs. Alcohol-based gels and wipes also work well.

Cartoonists Imagination on Swine Flu:

Cartoonists Imagination on Swine Flu

Visit for Updates CDC:

Visit for Updates CDC CDC ( Center of Disease) control updates the current information. The topic made as per guidelines of CDC

Created for Awarness on Swine Flu:

Created for Awarness on Swine Flu Dr.T.V.Rao MD Email doctortvrao@gmail.com