Important Clarification Required
The question asks about "Mycobacterium vaginitis" - however, this appears to be a terminology error. There is no such entity as Mycobacterium vaginitis in medical literature.
Based on the context and available evidence, you likely mean one of two conditions:
1. Mycoplasma genitalium infection (most likely)
If you're asking about Mycoplasma genitalium vaginitis/cervicitis, the treatment is:
For initial treatment without known macrolide resistance: Azithromycin 500 mg orally on day 1, then 250 mg once daily for days 2-5 1, 2. This extended azithromycin regimen achieves 99% cure rates and prevents development of macrolide resistance, unlike single-dose azithromycin which leads to 100% resistance development in treatment failures 3.
For macrolide-resistant or treatment failure cases: Moxifloxacin 400 mg orally once daily for 7 days (14 days for complicated infections like PID) 2, 4.
Key Treatment Algorithm:
- First-line: Extended azithromycin (5-day course) - superior to single-dose
- Second-line: Moxifloxacin 400 mg daily × 7 days
- Third-line: Doxycycline 100 mg twice daily × 14 days (only 30-40% cure rate) or pristinamycin 1 g four times daily × 10 days (75% cure rate) 2, 4
Critical Pitfalls:
- Never use azithromycin 1 g single dose - it selects for macrolide resistance in 100% of failures 3
- Doxycycline alone has only 30-40% efficacy and should not be first-line 2, 3
- Test for macrolide resistance when available to guide therapy 1, 2
2. Bacterial Vaginosis (if terminology confusion)
If you meant general bacterial vaginitis/vaginosis, the treatment is different - see bacterial vaginosis guidelines with metronidazole or clindamycin 5, 6.
Please clarify which condition you're asking about for a more precise answer.