WHO je oznachila prelazak na 4. fazu pandemijske uzbune. Ovo ne mirishe na dobro, ako se zna koliko brzo mutiraju ovakvi virusi. Ja se iskreno nadam da ce ostati na nivou SARS, mada је razvoj epidemije kao u sluchaju SARS govoto nemoguc, jer se radi o virusima koji nemaju mnogo zajednichkog.
Evo i izjave generalnog direktora WHO, Margaret Cen:
Krizni Komitet WHO, osnovan u skladu sa Medjunarodnim zdravstvenim pravilima iz 2005, odrzao je svoj drugi sastanak 27. aprila 2009.
Komitet je uzeo u obzir raspolozive podatke o potvrdjenim pojavama A/H1N1 svinjskog gripa u SAD, Meksiku i Kanadi. Komitet je takodje razmatrao izvestaje o mogucem sirenju u druge zemlje.
Po savetu Komiteta, generalni direktor WHO je odlucio sledece:
Nivo pandemijske uzbune za svinjski grip se podize sa faze 3 na fazu 4.
Promena na vishu fazu pandemijske uzbune ukazuje da se mogucnost pandemije povecala, ali ne i da je pandemija neizbezna.
Kako informacije budu pristizale, WHO moze odluciti da se vrati na fazu 3 ili da podigne nivo uzbune na vishu fazu.
Odluka je zasnovana prvenstveno na epidemoloshkim podacima koji pokazuju prenosivost virusa medju ljudima i sposobnost virusa da zarazi cele zajednice.
Imajuci u vidu rasirenost virusa, generalni direktor smatra da izolacija/suzbijanje virusa nije moguce. Stoga se fokus mora prebaciti na mere ublazavanja posledica.
Generalni direktor preporucuje da se granice ne zatvaraju i da se ne ogranicava medjunarodni saobracaj. Smatrace se razboritim da ljudi koji su bolesni odloze svoje medjunarodno putovanje, a oni koji dobiju simptome bolesti posle medjunarodnog putovanja da se obrate lekaru.
Generalni direktor smatra da bi proizvodnja vakcine za sezonski grip trebalo da se nastavi zasada, shto je podlozhno reevaluaciji, kako se situacija bude odvijala. WHO ce zapoceti proces potreban za proizvodnju vakcine efikasne protiv virusa A/H1N1.
Generalni direktor naglashava da sve mere moraju biti adekvatne svrsi i opsegu Medjunarodnih zdravstvenih pravila.
Evo i nekih osnovnih podataka o svinjskom gripu (uopshteni su i odnose se uglavnom na situaciju pre pojave ovog mutiranog virusa, ali ih treba znati).
What are the implications for human health?Outbreaks and sporadic human infection with swine influenza have been occasionally reported. Generally clinical symptoms are similar to seasonal influenza but reported clinical presentation ranges broadly from asymptomatic infection to severe pneumonia resulting in death.
Since typical clinical presentation of swine influenza infection in humans resembles seasonal influenza and other acute upper respiratory tract infections, most of the cases have been detected by chance through seasonal influenza surveillance. Mild or asymptomatic cases may have escaped from recognition; therefore the true extent of this disease among humans is unknown.
Where have human cases occurred?Since the implementation of IHR(2005)1 in 2007, WHO has been notified of swine influenza cases from the United States and Spain.
How do people become infected?People usually get swine influenza from infected pigs, however, some human cases lack contact history with pigs or environments where pigs have been located. Human-to-human transmission has occurred in some instances but was limited to close contacts and closed groups of people.
Is it safe to eat pork and pork products?Yes. Swine influenza has not been shown to be transmissible to people through eating properly handled and prepared pork (pig meat) or other products derived from pigs. The swine influenza virus is killed by cooking temperatures of 160 F/70 C, corresponding to the general guidance for the preparation of pork and other meat.
Which countries have been affected by outbreaks in pigs?Swine influenza is not notifiable to international animal health authorities (OIE, www.oie.int), therefore its international distribution in animals is not well known. The disease is considered endemic in the United States. Outbreaks in pigs are also known to have occurred in North America, South America, Europe (including the UK, Sweden, and Italy), Africa (Kenya), and in parts of eastern Asia including China and Japan.
1 International Health Regulation (2005)
http://www.who.int/ihr/about/en/What about the pandemic risk?It is likely that most of people, especially those who do not have regular contact with pigs, do not have immunity to swine influenza viruses that can prevent the virus infection. If a swine virus establishes efficient human-to human transmission, it can cause an influenza pandemic. The impact of a pandemic caused by such a virus is difficult to predict: it depends on virulence of the virus, existing immunity among people, cross protection by antibodies acquired from seasonal influenza infection and host factors.
Is there a human vaccine to protect from swine influenza?There are no vaccines that contain the current swine influenza virus causing illness in humans. It is not known whether current human seasonal influenza vaccines can provide any protection. Influenza viruses change very quickly. It is important to develop a vaccine against the currently circulating virus strain for it to provide maximum protection to the vaccinated people. This is why WHO needs access to as many viruses as possible in order to select the most appropriate candidate vaccine virus.
What drugs are available for treatment?There are two classes of such medicines, 1) adamantanes (amantadine and remantadine), and 2) inhibitors of influenza neuraminidase (oseltamivir and zanamivir).
Most of the previously reported swine influenza cases recovered fully from the disease without requiring medical attention and without antiviral medicines.
Some influenza viruses develop resistance to the antiviral medicines, limiting the effectiveness of treatment. The viruses obtained from the recent human cases with swine influenza in the United States are sensitive to oselatmivir and zanamivir but resistant to amantadine and remantadine.
Information is insufficient to make recommendation on the use of the antivirals in treatment of swine influenza virus infection. Clinicians have to make decisions based on the clinical and epidemiological assessment and harms and benefit of the treatment of the patient2. For the ongoing outbreak of the swine influenza infection in the United States and Mexico, the national and the local authorities are recommending to use oseltamivir or zanamivir for treatment of the disease based on the virus’s susceptibility profile.
2 For benefits and harms of influenza-specific antivirals, see
http://www.who.int/c...t/en/index.htmlWhat should I do if I am in regular contact with pigs?Even though there is no clear indication that the current human cases with swine influenza infection are related to recent or ongoing influenza-like disease events in pigs, it would be advisable to minimize contact with sick pigs and report such animals to relevant animal health authorities.
Most people are infected through prolonged, close contact with infected pigs. Good hygiene practices are essential in all contact with animals and are especially important during slaughter and post-slaughter handling to prevent exposure to disease agents. Sick animals or animals that died from disease should not be undergoing slaughtering procedures. Follow further advice from relevant national authorities.
Swine influenza has not been shown to be transmissible to people through eating properly handled and prepared pork (pig meat) or other products derived from pigs. The swine influenza virus is killed by cooking temperatures of 160oF/70oC corresponding to the general guidance for the preparation of pork and other meat.
How can I protect myself from getting swine influenza from infected people?
In the past, human infection with swine influenza was generally mild but is known to have caused severe illness such as pneumonia For the current outbreaks in the United States and Mexico however, the clinical pictures have been different. None of the confirmed cases in the United States have had the severe form of the disease and the patients recovered from illness without requiring medical care. In Mexico, some patients reportedly had the severe form of the disease.
To protect yourself, practice general preventive measures for influenza:• Avoid close contact with people who appear unwell and who have fever and cough.
• Wash your hands with soap and water frequently and thoroughly.
• Practice good health habits including adequate sleep, eating nutritious food, and keeping physically active.
If there is an ill person at home:
• Try to provide the ill person a separate section in the house. If this is not possible, keep the patient at least 1 meter in distance from others.
• Cover mouth and nose when caring for the ill person. Masks can be bought commercially or made using the readily available materials as long as they are disposed of or cleaned properly.
• Wash your hands with soap and water thoroughly after each contact with the ill person.
• Try to improve the air flow in the area where the ill person stays. Use doors and windows to take advantage of breezes.
• Keep the environment clean with readily available household cleaning agents.
If you are living in a country where swine influenza has caused disease in humans, follow additional advice from national and local health authorities.
What should I do if I think I have swine influenza?If you feel unwell, have high fever, cough and/or sore throat:
• Stay at home and keep away from work, school or crowds as much as possible.
• Rest and take plenty of fluids.
• Cover your mouth and nose with disposable tissues when coughing and sneezing and dispose of the used tissues properly.
• Wash your hands with soap and water frequently and thoroughly, especially after coughing or sneezing.
• Inform family and friends about your illness and seek help for household chores that require contact with other people such as shopping.
If you need medical attention:
• Contact your doctor or healthcare provider before travelling to see them and report your symptoms. Explain why you think you have swine influenza (for example, if you have recently travelled to a country where there is a swine influenza outbreak in humans). Follow the advice given to you for care.
• If it is not possible to contact your healthcare provider in advance, communicate your suspicion of having swine influenza immediately upon arrival at the healthcare facility.
• Take care to cover your nose and mouth during travel.
