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The UK Health Safety Agency (UKHSA) has detected an unusual increase in Streptococcus pyogenes infections in the last month. This bacterium is responsible for mild infections, but also for more serious conditions such as scarlet fever and, above all, invasive disease. The British authorities have raised the alarm after at least eight children died from this pathogen. In Spain, the Spanish Society of Paediatric Infectious Diseases has reported that there have also been some deaths and is analysing whether there has been an unusual increase in cases.

Two studies published in the journal Nature Communications have found specific characteristics in the microbiota of people with depression, including populations of different ethnicities and habits.

A study published in the journal Nature Astronomy suggests the existence of an active mantle plume on Mars - a column of material from the mantle that generates hot spots - with a diameter of about 4,000 kilometres, which would explain its geological activity. The planet was traditionally considered to be geologically inert at present.

Research involving 10,775 adults shows that a higher percentage of daily energy intake from ultra-processed foods was associated with cognitive impairment. The results are published in the journal JAMA Neurology.

Some 4,000 engraved slate plaques resembling owls have been found in tombs and graves on the Iberian Peninsula dating back to the Copper Age. It has been speculated that they may have had a ritual significance. Spanish scientists have analysed 100 of these plaques and propose, in an article published in Scientific Reports, that they may have been carved by children for play.

A ketogenic diet, high in fat and low in carbohydrates, could increase platelet production and alleviate the low platelet counts caused by chemotherapy treatments. This is the finding of a small study published in the journal Science Translational Medicine. 

A study published in PLOS ONE reveals that more than 2,600 bacteria live on average on each floating microfibre in the Mediterranean Sea, belonging to 195 bacterial species. This waste from plastic pollution, textiles and fishing activities, once colonised, smells like food and is consumed by marine animals. Among them, pathogenic Vibrio species have been found, a bacterium that can be a threat to bathing and seafood consumption.

The journal Nature publishes a quantum simulation of a holographic wormhole on a quantum processor. The demonstration, carried out with the Google Sycamore processor, represents a further step towards the possibility of studying quantum gravity in the laboratory.

A few weeks ago, a press release from the Biogen and Eisai companies reported significant results from their lecanemab antibody for the treatment of early-stage Alzheimer's. The data from the phase 3 trial are now published in the New England Journal of Medicine, coinciding with the CTAD conference on Alzheimer's disease clinical trials in San Francisco. Data from the phase 3 clinical trial are now published in the New England Journal of Medicine, coinciding with the 15th CTAD Alzheimer's disease clinical trials conference in San Francisco.

A study in Spanish children, with follow-up from pregnancy to adolescence, has found an association between children's exposure to pesticides and fungicides and earlier breast development in girls and genital development in boys. The work has been carried out by the University of Granada (UGR), the Institute for Biosanitary Research (ibs.GRANADA) and CIBERESP (ISCIII).