YOU SAID:
A negative test result means that RNA from several genes that are expressed by the SARS-CoV-2 virus that causes COVID-19 was not found in your saliva sample, and that you are unlikely to be infected with the virus.
INTO JAPANESE
陰性の検査結果とは、COVID-19を引き起こすSARS-CoV-2ウイルスによって発現されるいくつかの遺伝子のRNAが唾液サンプルに見つからず、ウイルスに感染する可能性が低いことを意味します。
BACK INTO ENGLISH
Negative test results mean that RNA for some genes expressed by the SARS-CoV-2 virus that causes COVID-19 is not found in saliva samples and is less likely to be infected with the virus.
INTO JAPANESE
陰性検査結果は、COVID-19を引き起こすSARS-CoV-2ウイルスによって発現される一部の遺伝子のRNAが唾液サンプルに見つからず、ウイルスに感染する可能性が低いことを意味する。
BACK INTO ENGLISH
Negative test results mean that RNA for some genes expressed by the SARS-CoV-2 virus that causes COVID-19 is not found in saliva samples and is less likely to be infected with the virus.
That didn't even make that much sense in English.