On 18 May, the Ministry of Health confirmed to SMC Spain that eight suspected cases "clinically compatible" with monkeypox had been detected. The same afternoon, the Consejería de Sanidad de la Comunidad de Madrid reported that it had detected 23 possible cases of infection. These cases need to be confirmed after testing. At least 7 cases have been confirmed in the UK and Portugal. This is a rare zoonotic viral disease and there is no vaccine or specific treatment available. Treatment is symptomatic and supportive. Most cases are resolved favourably.

Cerebrospinal fluid provides nutrients and other elements to brain cells. Scientists now show that by obtaining it from young mice and injecting it into the brains of old mice, the latter recover their memory. The effect is attributed to a protein, Fgf17, presented today in Nature as a possible brain rejuvenation factor. 

Caloric restriction (substantially reducing food intake in a controlled way) prolongs longevity in many animal species. A new result in mice, published in Science, finds that this effect is greater if the animals only eat during the body's natural active phase.

Climate change will lead to at least 15,000 new cross-species virus transmissions by 2070, as habitat shifts on a 2°C warmer planet will bring previously distant animals closer together. This result, published in Nature, points to increased exposure of humans to pathogens from wild animals.

Whole genome analysis of more than 12,000 tumors has identified new patterns of mutations associated with specific cancers. These combinations generate specific mutational signatures, the study of which provides information on environmental factors causing the mutations. The work is published in Science.