In the last weeks, together with one colleague medical doctor, we monitored by laboratory tests our patients positive for Covid

Visual inspection of Cr-retained data (see Figure 1a in the manuscript) indicates that the amount of Cr retained in bee bodies grows with the amount of Cr dissolved in syrup.

This guidance should be led by a group of independent scientific experts rather than exclusively private for profit laboratories since for profit laboratories inevitably have elements of competitiveness among them.

We suggest a novel and holistic approach for capturing bee health through combining field and laboratory tools.

The high demand for honey bee queens has led commercial queen breeders to use incubators instead of the traditional method of incubating capped queen cells inside colonies.

Despite the crucial importance of biotic pollination for many crops, land managers rarely monitor the levels of crop pollination needed to guide farming decisions.

Lockdowns, quarantine requirements and border closures introduced in recent weeks around the world to slow the coronavirus pandemic are threatening to hit food production by limiting the movement of bees, agriculturalists have warned.

When humans switched from hunting honeybee colonies living scattered in the wild to keeping them in hives crowded in apiaries, they may have greatly increased disease transmission between colonies.

In 1996 Varroa was diagnosed in Cuba, it hit very strong beekeeping. First impact area all wild bees disappear for not less than two years.

Today over 16,000 species have been described worldwide, and undoubtedly they constitute a major part of the food chain, as well as the ecosystem's sensitive equilibrium.