Complex sentence: A new serological test called the Tubex test is not superior to the Widal test, and even the Widal test gives better performance results, so the Tubex test is not recommended for diagnosis of typhoid fever.
Split into simpler sentences: A new serological test called the Tubex test is neither superior nor better performing than the Widal test. Therefore, Tubex test is not recommended for diagnosis of typhoid fever.