By comparison, other viruses, such as smallpox and vaccinia, are around 10 times larger at about 300 nanometers; while flu viruses are around 80–120 nm.
Sebagai perbandingan, virus lain seperti virus cacar dan vaccinia, sekitar 10 kali lebih besar atau sekitar 300 nanometer; sementara virus flu sekitar 80-120 nm.