Costa Rican Health Minister Maria Luisa Avila confirmed on Thursday six new cases of the A/H1N1 flu, bringing the country's total to 26.

Avila said that this six patients were not among the pervious reports of possible cases of the H1N1 flu due to the detection limitations. However, she said that now the Costa Rican Institute of Nutrition and Health Investigation and Research (Inciensa) has more capacity to analyze the samples.

"From these six new cases, four were from the transmission chain of a girl in Heredia city, who infected her three brothers and the doctor who assisted her," Avila said.

The other two cases were in San Jose and the transmission chain is still being investigated.

Avila said that probably it is starting to be an autochthonous transmission of the H1N1 flu. However, she denied a massive infections, because the new cases are kept on chains of contact.

To the moment the authorities have determined 1,080 possible cases, from them 925 were discarded and 127 are waiting for the lab tests results.

Also there are other two pending cases, which were negative, but the results are doubtable.

Costa Rica was the fourth country in the world on reporting a death due to the H1N1 flu, after the cases reported in Mexico, the United States and Canada.