There are no viruses in nature harmful to humans. The onus of proof is on those claiming that there are and profiting from that claim, so far without evidence that can stand up to scrutiny. The challenge is made.
The claim that a doctored bat virus that was contagious was released in Wuhan doesn't hold water. Exosomes that are being called viruses are common across species and are produced by cells every few seconds, healthy or not. They are inert. They have various functions including in the immune system. They carry cell waste away for disposal, I think by white cells. They carry messages beween cells. They are not harmful.
"Exosomes are being heralded as the next frontier of cell therapy. While not being cells at all, they play a vital role in the communication and rejuvenation of all the cells in our body. Science has shown that the cell-to cell communication is important in maintaining a healthy cellular terrain."
"Exosomes are extracellular vesicles, or small bubbles, released from cells that act as shuttles for genetic information, proteins and messenger RNA to other cells. This usually happens in response to injuries. Generally speaking, Exosomes carry healthy and lost information and insert this to target cells. Exosomes released by young stem cells have shown to be very powerful in regulating regenerative processes in the body and assisting in rejuvenation."
"Exosomes from stem cells contain valuable cell information consisting of proteins and genetic information the cell needs to function correctly. These stem cell derived Exosomes have also shown to assist in transferring NK cells (Killer cells) into T-Regulator cells (Helper cells). By that they assist in calming an overreactive immune system and modulating it to respond in a coordinated fashion.
They can also be used as a delivery system for medication." *
"Age, chronic disease, environmental factors and genetic disorders can interfere with how our stem cells communicate with other cells, thus disrupting the healing process. Exosomes play a key role in the regulation of these communication processes."
Excerpts are from the archived Infusio's "Exosomes".
* It seems to me that to accomplish such transport requires a human exosome because of the need for recognition for the transfer of information to take place ergo bat exosomes attaching to a cell would cause an immune response.
Exosomes are inert and do not evolve. The suggestion that human cells can reproduce bat exosomes is ridiculous.