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Influenza A/H1N1: 14 May
14 May 2009

United States
The United States has reported 4,298 cases from 47 states with 3 deaths.
Novel influenza A (H1N1) activity is now being detected through CDC’s routine influenza surveillance systems and reported weekly in FluView. 
CDC tracks U.S. influenza activity through multiple systems across five categories. The fact that novel H1N1 activity is now detected through seasonal surveillance systems is an indication that there are higher levels of influenza-like illness in the United States than is normal for this time of year. About half of all influenza viruses being detected are novel H1N1 viruses. 
Source: CDC

5 new confirmed cases has been reported from Europe over the past 24 hours including the first case from belgoium. 222 cases have been reported in Europe of which 62 has been infected in Europe.
Source: E-CDC

As of 06:00 GMT, 14 May 2009, 33 countries have officially reported 6497 cases of influenza A(H1N1) infection.
Mexico has reported 2446 laboratory confirmed human cases of infection, including 60 deaths. The United States has reported 3352 laboratory confirmed human cases, including three deaths. Canada has reported 389 laboratory confirmed human cases, including one death. Costa Rica has reported eight laboratory confirmed human cases, including one death.
The following countries have reported laboratory confirmed cases with no deaths - Argentina (1), Australia (1), Austria (1), Brazil (8), China (4), Colombia (7), Cuba (1), Denmark (1), El Salvador (4), Finland (2), France (14), Germany (12), Guatemala (3), Ireland (1), Israel (7), Italy (9), Japan (4), Netherlands (3), New Zealand (7), Norway (2), Panama (29), Poland (1), Portugal (1), Republic of Korea (3), Spain (100), Sweden (2), Switzerland (1), Thailand (2), and the United Kingdom (71).

WHO is not recommending travel restrictions related to the outbreak of the influenza A(H1N1) virus.

Source: W.H.O.
WHO map of countries reporting cases of influenza A(H1N1). 
WHO H1N1 website

With now more than 4,000 confirmed cases in the US, and reports of increased influenza activity of which half is the new H1N1, there is no doubt that H1N1 is firmly established in the US and able of sustained human transmission even though it is May, where influenza usually stops.

The good news is that the death rates stay low and most probably the infection are as mild as the seasonal influenza.

The widespread local transmission in the United States means that any traveler to the US is at risk of being infected.

No particular precautions are recommended. If belonging to a risk group where influenza immunization is recommended, the traveler could bring Tamiflu or relenza for self-treatment. 
There is no vaccine.