Latent viruses hang around in your system indefinitely, held in check by your immune system. But sometimes they cause serious health issues down the road.
Researcher Masahiro Ono notes that an image shows T-cells, not the Human T-cell Lymphotropic Virus, Type 1, itself. In an email he writes, “Precisely, all the cells are CD4+ T-cells , and HTLV-1 infects specifically CD4+ T-cells. Blue colours are the stain of nucleus, and HTLV-1 is integrated into the genome in the nucleus. Red colours stain a protein called Foxp3, which is often found in the over-activated T-cells in HTLV-1 infection.”With any luck, they’re not SARS-CoV-2.
More than a dozen of these latent viruses infect humans, and researchers have been trying to understand them for a long time. Some of them inhabit as much as 80 to 90% of the human population. They knock on the doors of our bodies when many of us are just kids, and our young immune systems let them in, where they stay for our entire lives.
A virus cannot replicate alone. Viruses must infect cells and use components of the host cell to make copies of themselves. Often, they kill the host cell in the process and cause damage to the host organism. Viruses have been found everywhere on Earth. Researchers estimate that viruses outnumber bacteria by 10 to 1.
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