Four H1N1 related deaths have been reported among pilgrims for the Hajj which starts on the 26th.
As immunization campaigns continue in over 40 countries, the WHO reiterated the safety of the H1N1 vaccine, adding that investigation into 40 post-vaccine deaths (among the over 65 million doses given in 16 countries alone) has found no association between the vaccine and the documented fatalities.
In a development not unexpected among experts, Tamiflu-resistant H1N1 clusters emerged among hospitalized patients with severe underlying medical conditions in Walesand North Carolina.
Norwegian scientists announced detection of a mutated H1N1 virus that may allow infection deeper into the airways leading to more severe disease. Hong Kong then reported the same mutation, and Finland saw it in July. The WHO subsequently stated that a similar mutation had been observed in six other countries as early as April. Despite the mutations, the H1N1 vaccine is still effective.