Culture
Viruses can be detected in specimen from patients suspected of SARS-CoVs by inoculation of cell cultures and growing the virus, which must be identified through either molecular or serologic techniques (WHO, 2003). Positive cultures indicate the presence of virus whereas negative result do not mean the virus is not present unless RT-PCR shows negative result (WHO, 2003). However, viral culture for COVID-19 is not recommended as a routine procedure for diagnosis (WHO, 2020), this is because it is time consuming, needs expertise and expensive, however rapid diagnostic methods are needed which are cheaper, do not require much expertise and can give results at the shortest possible time,.