Da zarar kwayar cutar ta yadu, akwai wani lokaci da mai cutar ba ya nuna alamun. Ana kiran wannan lokaci shiru, kuma na karshen yana tsakanin kwanaki 2 zuwa 21. A cikin wannan lokacin, ba zai yuwu a iya gano kwayar cutar a cikin jini ba saboda ta yi ƙasa sosai, kuma ba za a iya jinyar mutum ba.

Sannan manyan alamun cutar Ebola na farko sun bayyana. Mafi bayyanar cututtuka guda biyar sune:

• Zazzafan zazzaɓi kwatsam, tare da sanyi;
• Gudawa;
• Amai;
• Gaji mai tsananin gaske;
• Babban hasara na ci (anorexia).

Wasu alamu na iya kasancewa:

• ciwon kai;
• ciwon tsoka;
• haɗin gwiwa;
• kasawa;
• ciwon makogwaro;
• ciwon ciki;

Kuma idan ya tsananta:

• tari;
• kumburin fata;
• ciwon kirji;
• Jajayen idanu;
• gazawar koda da hanta;
• ciwon ciki da na waje.