The uncertainties posed by the virus A/H1N1 justifies the world to stay alert to influenza may increase their aggressiveness at any time

The uncertainties posed by the virus A/H1N1 justifies the world to stay alert to influenza may increase their aggressiveness at any time. These terms are expressed yesterday by Dr. Keiji Fukuda, deputy director general of the World Health Organization (WHO), who cited the two key questions unresolved: why the virus is more aggressive and deadly in Mexico than in the rest the world and what is its incubation time in humans. Nor is it known why the symptoms that cause diarrhea are strong, not common in conventional flu each winter. This item is attributed, on an informal basis, the porcine origin of the infection.
Fukuda found it a disturbing fact: "The virus is moving into the southern hemisphere, where winter is about to begin, and with it, the climate is prone to the spread of influenza. The vast majority of cases still occurring in the U.S. and Mexico, the only countries where A/H1N1 is progressing steadily and consistently. In the rest of the world, the trickle of new cases is irregular. Just reported infections in Africa.
The head of the WHO reported that the total number of infected in the world has already passed the thousand. 1007 was a mid-afternoon, 26 of them died. In Spain, the infection affects 57 persons, of whom 17 are in Catalonia. It is the country with more cases of Europe together with the United Kingdom. Yesterday 16 new infections were in people who have not traveled to Mexico and had received the contagion of someone close. All are in Europe, five in Spain (three and two in Catalonia Castilla-La Mancha), nine in the United Kingdom and two in Germany. Mexico does not report this type of infection, which most likely are occurring in that country. This is another route of transmission of the great unknowns of A/H1N1. The speed with which progress depends that WHO declared the pandemic alert level 6, which is the beginning of the epidemic overall.
The greatest attention of scientists
scientists focused on China and Southeast Asia, areas that could be incorporated into the virus genetic material of some birds, something that certainly would add to its infectious and lethal. "More than what is already happening, we are concerned about all these questions are impossible to solve," he said. "We do not know how long we have before moving to Phase 6," summarized Margaret Chan, director general of WHO.
If the new virus to maintain its current parameters of infection until the summer and retain the high temperature achieved, the balance of the episode of infection was much lower than any intense winter flu, said Dr. Ignasi Calico virologist at the Hospital del Vall d'Hebron in Barcelona. "The last epidemic of influenza hit in Catalonia more than 15% of the population, one million people who showed more severe symptoms than those who are detected with the new influenza A," Calico said. "In reality, A/H1N1 is giving some very low numbers of affected and died, compared with that occur every winter," he added.

OTHER DEATHS
Influenza in Spain each winter because half of 4,000 deaths, nearly 400,000 in the rest of the world. These deaths, unlike the case with the influenza A, usually occur in elderly persons with prior illness, for which the respiratory infection represents an episode against defenses that are no longer immune. The deceased by the new A/H1N1, however, are young, like the majority of patients. 90% of those infected are 20 to 25 years. Another point of concern to scientists is the contagion of diseased pigs.